diff --git a/source/chapter3/06_Declarations.md b/source/chapter3/06_Declarations.md
index 43c347b4..d9d3523f 100755
--- a/source/chapter3/06_Declarations.md
+++ b/source/chapter3/06_Declarations.md
@@ -773,7 +773,7 @@ enum GamePlayMode: String {
 > *枚举用例名称* → [*标识符*](./02_Lexical_Structure.md#identifier)
 > 
 >
-> ######  raw-value-style-enum {#raw-value-style-enum}
+> #####  raw-value-style-enum {#raw-value-style-enum}
 > 
 >
 > *原始值风格枚举* → **enum** [*枚举名称*](#enum-name) [*泛型形参子句*](08_Generic_Parameters_and_Arguments.md#generic-parameter-clause)<sub>可选</sub> [*类型继承子句*](./03_Types.md#type-inheritance-clause)  [*泛型 where 子句*](./09_Generic_Parameters_and_Arguments.md#generic-where-clause) **{** [*多个原始值风格枚举成员*](#raw-value-style-enum-members) **}**
diff --git a/source/chapter3/10_Summary_of_the_Grammar.md b/source/chapter3/10_Summary_of_the_Grammar.md
index 1c5520d9..cad60108 100755
--- a/source/chapter3/10_Summary_of_the_Grammar.md
+++ b/source/chapter3/10_Summary_of_the_Grammar.md
@@ -868,11 +868,11 @@
 >
 > *switch-case* → [条件 switch-case](./05_Statements.md#conditional_switch_case)
 >
-> *case 标签* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **case** [case 项集](./05_Statements.md#case_item_list) **:**
+> *case 标签* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **case** [case 项集](./05_Statements.md#case_item_list) **:**
 >
 > *case 项集* → [模式](./08_Patterns.md#pattern) [where 子句](./05_Statements.md#where_clause)<sub>可选</sub> | [模式](./08_Patterns.md#pattern) [where 子句](./05_Statements.md#guard_clause)<sub>可选</sub> **,** [case 项集](./05_Statements.md#case_item_list)
 >
-> *default 标签* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **default** **:**
+> *default 标签* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **default** **:**
 >
 > *where 子句* → **where** [where 表达式](./05_Statements.md#where_expression)
 >
@@ -1147,7 +1147,7 @@
 
 > 导入声明语法
 >
-> *导入声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **import** [导入类型](./06_Declarations.md#import_kind)<sub>可选</sub> [导入路径](./06_Declarations.md#import_path)
+> *导入声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **import** [导入类型](./06_Declarations.md#import_kind)<sub>可选</sub> [导入路径](./06_Declarations.md#import_path)
 >
 > *导入类型* → **typealias** | **struct** | **class** | **enum** | **protocol** | **let** | **var** | **func**
 >
@@ -1160,7 +1160,7 @@
 
 > 常数声明语法
 >
-> *常量声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_specifiers)<sub>可选</sub> **let** [模式构造器集](./06_Declarations.md#pattern_initializer_list)
+> *常量声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_specifiers)<sub>可选</sub> **let** [模式构造器集](./06_Declarations.md#pattern_initializer_list)
 >
 > *模式构造器集* → [模式构造器](./06_Declarations.md#pattern_initializer) | [模式构造器](./06_Declarations.md#pattern_initializer)    **,** [模式构造器集](./06_Declarations.md#pattern_initializer_list)
 >
@@ -1185,19 +1185,19 @@
 >
 > *变量声明* → [变量声明头](./06_Declarations.md#variable_declaration_head) [变量名](./06_Declarations.md#variable_name) [类型注解](./03_Types.md#type_annotation) [构造器](./06_Declarations.md#initializer)<sub>可选</sub> [willSet-didSet 代码块](./06_Declarations.md#willSet_didSet_block)
 >
-> *变量声明头* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_specifiers)<sub>可选</sub> **var**
+> *变量声明头* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_specifiers)<sub>可选</sub> **var**
 >
 > *变量名称* → [标识符](./02_Lexical_Structure.md#identifier)
 >
 > *getter-setter 块* → [代码块](./06_Declarations.md#code_block)
 >
-> *getter-setter 块* → **{** [getter 子句](./06_Declarations.md#getter_clause) [setter 子句](./06_Declarations.md#setter_clause)<sub>可选</sub> **}**
+> *getter-setter 块* → **{** [getter 子句](./06_Declarations.md#getter_keyword_clause) [setter 子句](./06_Declarations.md#setter_keyword_clause)<sub>可选</sub> **}**
 >
-> *getter-setter 块* → **{** [setter 子句](./06_Declarations.md#setter_clause) [getter 子句](./06_Declarations.md#getter_clause) **}**
+> *getter-setter 块* → **{** [setter 子句](./06_Declarations.md#setter_keyword_clause) [getter 子句](./06_Declarations.md#getter_keyword_clause) **}**
 >
-> *getter 子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub>  **get**  [代码块](./06_Declarations.md#code_block)
+> *getter 子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub>  **get**  [代码块](./06_Declarations.md#code_block)
 >
-> *setter 子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub> **set** [setter 名称](./06_Declarations.md#setter_name)<sub>可选</sub> [代码块](./06_Declarations.md#code_block)
+> *setter 子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub> **set** [setter 名称](./06_Declarations.md#setter_name)<sub>可选</sub> [代码块](./06_Declarations.md#code_block)
 >
 > *setter 名称* → **(** [标识符](./02_Lexical_Structure.md#identifier) **)**
 >
@@ -1205,17 +1205,17 @@
 >
 > *getter-setter 关键字（Keyword）块* → **{** [setter 关键字子句](./06_Declarations.md#setter_keyword_clause) [getter 关键字子句](./06_Declarations.md#getter_keyword_clause) **}**
 >
-> *getter 关键字（Keyword）子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub> **get**
+> *getter 关键字（Keyword）子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub> **get**
 >
-> *setter 关键字（Keyword）子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub> **set**
+> *setter 关键字（Keyword）子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [可变性修饰符](./06_Declarations.md#mutation-modifier)<sub>可选</sub> **set**
 >
 > *willSet-didSet 代码块* → **{** [willSet 子句](./06_Declarations.md#willSet_clause) [didSet 子句](./06_Declarations.md#didSet_clause)<sub>可选</sub> **}**
 >
 > *willSet-didSet 代码块* → **{** [didSet 子句](./06_Declarations.md#didSet_clause) [willSet 子句](./06_Declarations.md#willSet_clause)<sub>可选</sub> **}**
 >
-> *willSet 子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **willSet** [setter 名称](./06_Declarations.md#setter_name)<sub>可选</sub> [代码块](./06_Declarations.md#code_block)
+> *willSet 子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **willSet** [setter 名称](./06_Declarations.md#setter_name)<sub>可选</sub> [代码块](./06_Declarations.md#code_block)
 >
-> *didSet 子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub>
+> *didSet 子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub>
 >
  **didSet** [setter 名称](./06_Declarations.md#setter_name)<sub>可选</sub> [代码块](./06_Declarations.md#code_block)
 
@@ -1223,7 +1223,7 @@
 
 > 类型别名声明语法
 >
-> *类型别名声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier) **typealias** [类型别名名称](./06_Declarations.md#typealias_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型别名赋值](./06_Declarations.md#typealias_assignment)
+> *类型别名声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier) **typealias** [类型别名名称](./06_Declarations.md#typealias_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型别名赋值](./06_Declarations.md#typealias_assignment)
 >
 > *类型别名名称* → [标识符](./02_Lexical_Structure.md#identifier)
 >
@@ -1236,7 +1236,7 @@
 >
 > *函数声明* → [函数头](./06_Declarations.md#function_head) [函数名](./06_Declarations.md#function_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [函数签名](./06_Declarations.md#function_signature) [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [函数体](./06_Declarations.md#function_body)<sub>可选</sub>
 >
-> *函数头* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [声明描述符集](./06_Declarations.md#declaration_specifiers)<sub>可选</sub> **func**
+> *函数头* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [声明描述符集](./06_Declarations.md#declaration_specifiers)<sub>可选</sub> **func**
 >
 > *函数名* → [标识符](./02_Lexical_Structure.md#identifier) | [运算符](./02_Lexical_Structure.md#operator)
 >
@@ -1245,7 +1245,7 @@
 
 > *函数签名* → [参数子句](./06_Declarations.md#parameter_clause) **rethrows** [函数结果](./06_Declarations.md#function_result)<sub>可选</sub>
 >
-> *函数结果* → **->** [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [类型](./03_Types.md#type)
+> *函数结果* → **->** [特性](./07_Attributes.md#attributes)<sub>可选</sub> [类型](./03_Types.md#type)
 >
 > *函数体* → [代码块](./06_Declarations.md#code_block)
 >
@@ -1270,9 +1270,9 @@
 
 > 枚举声明语法
 >
-> *枚举声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> [联合式枚举](./06_Declarations.md#union_style_enum)
+> *枚举声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> [联合式枚举](./06_Declarations.md#union_style_enum)
 >
-> *枚举声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> [原始值式枚举](./06_Declarations.md#raw-value-style-enum)
+> *枚举声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> [原始值式枚举](./06_Declarations.md#raw-value-style-enum)
 >
 > *联合式枚举* → **indirect**<sub>可选</sub> **enum** [枚举名](./06_Declarations.md#enum_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型继承子句](./03_Types.md#type-inheritance-clause)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> **{** [联合式枚举成员](./06_Declarations.md#union_style_enum_members)<sub>可选</sub> **}**
 >
@@ -1280,7 +1280,7 @@
 >
 > *联合样式枚举成员* → [声明](./06_Declarations.md#declaration) | [联合式枚举 case 子句](./06_Declarations.md#union_style_enum_case_clause) | [编译控制语句](./05_Statements.md#compiler-control-statement)
 >
-> *联合式枚举 case 子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **indirect**<sub>可选</sub> **case** [联合式枚举 case 集](./06_Declarations.md#union_style_enum_case_list)
+> *联合式枚举 case 子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **indirect**<sub>可选</sub> **case** [联合式枚举 case 集](./06_Declarations.md#union_style_enum_case_list)
 >
 > *联合式枚举 case 集* → [联合式枚举 case](./06_Declarations.md#union_style_enum_case) | [联合式枚举 case](./06_Declarations.md#union_style_enum_case) **,** [联合式枚举 case 集](./06_Declarations.md#union_style_enum_case_list)
 >
@@ -1296,7 +1296,7 @@
 >
 > *原始值式枚举成员* → [声明](./06_Declarations.md#declaration) | [原始值式枚举 case 子句](./06_Declarations.md#raw_value_style_enum_case_clause) | [编译控制语句](./05_Statements.md#compiler-control-statement)
 >
-> *原始值式枚举 case 子句* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **case** [原始值式枚举 case 集](./06_Declarations.md#raw_value_style_enum_case_list)
+> *原始值式枚举 case 子句* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **case** [原始值式枚举 case 集](./06_Declarations.md#raw_value_style_enum_case_list)
 >
 > *原始值式枚举 case 集* → [原始值式枚举 case](./06_Declarations.md#raw_value_style_enum_case) | [原始值式枚举 case](./06_Declarations.md#raw_value_style_enum_case) **,** [原始值式枚举 case 集](./06_Declarations.md#raw_value_style_enum_case_list)
 >
@@ -1311,7 +1311,7 @@
 
 > 结构体声明语法
 >
-> *结构体声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **struct** [结构体名称](./06_Declarations.md#struct_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [结构体主体](./06_Declarations.md#struct_body)
+> *结构体声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **struct** [结构体名称](./06_Declarations.md#struct_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [结构体主体](./06_Declarations.md#struct_body)
 >
 > *结构体名称* → [标识符](./02_Lexical_Structure.md#identifier)
 >
@@ -1326,9 +1326,9 @@
 
 > 类声明语法
 >
-> *类声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **final**<sub>可选</sub> **class** [类名](./06_Declarations.md#class_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型继承子句](./03_Types.md#type_inheritance_clause) [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [类主体](./06_Declarations.md#class_body)
+> *类声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **final**<sub>可选</sub> **class** [类名](./06_Declarations.md#class_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型继承子句](./03_Types.md#type_inheritance_clause) [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [类主体](./06_Declarations.md#class_body)
 >
-> *类声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **final** [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **class** [类名](./06_Declarations.md#class_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型继承子句](./03_Types.md#type_inheritance_clause) [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [类主体](./06_Declarations.md#class_body)
+> *类声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **final** [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **class** [类名](./06_Declarations.md#class_name) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [类型继承子句](./03_Types.md#type_inheritance_clause) [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [类主体](./06_Declarations.md#class_body)
 >
 > *类名* → [标识符](./02_Lexical_Structure.md#identifier)
 >
@@ -1343,7 +1343,7 @@
 
 > 协议声明语法
 >
-> *协议声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub>  **protocol** [协议名](./06_Declarations.md#protocol_name) [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [协议主体](./06_Declarations.md#protocol_body)
+> *协议声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub>  **protocol** [协议名](./06_Declarations.md#protocol_name) [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [协议主体](./06_Declarations.md#protocol_body)
 >
 > *协议名* → [标识符](./02_Lexical_Structure.md#identifier)
 >
@@ -1400,7 +1400,7 @@
 
 > 协议关联类型声明语法
 >
-> *协议关联类型声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **associatedtype** [类型别名](./06_Declarations.md#typealias_name) [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [类型别名赋值](./06_Declarations.md#typealias_assignment)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub>
+> *协议关联类型声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **associatedtype** [类型别名](./06_Declarations.md#typealias_name) [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [类型别名赋值](./06_Declarations.md#typealias_assignment)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub>
 >
 
 <!-- -->
@@ -1411,11 +1411,11 @@
 >
 > *构造器声明* → [构造器头](./06_Declarations.md#initializer_head) [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [参数子句](./06_Declarations.md#parameter_clause) **rethrows** [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [构造器主体](./06_Declarations.md#initializer_body)
 >
-> *构造器头（Head）* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub>  **init**
+> *构造器头（Head）* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub>  **init**
 >
-> *构造器头（Head）* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub>  **init ?**
+> *构造器头（Head）* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub>  **init ?**
 >
-> *构造器头（Head）* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub>  **init !**
+> *构造器头（Head）* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub>  **init !**
 >
 > *构造器主体* → [代码块](./06_Declarations.md#code_block)
 >
@@ -1424,14 +1424,14 @@
 
 > 析构器声明语法
 >
-> *析构器声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> **deinit** [代码块](./06_Declarations.md#code_block)
+> *析构器声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> **deinit** [代码块](./06_Declarations.md#code_block)
 >
 
 <!-- -->
 
 > 扩展声明语法
 >
-> *扩展声明* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **extension** [类型标识](./03_Types.md#type_identifier) [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [扩展主体](./06_Declarations.md#extension_body)
+> *扩展声明* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [访问级别修饰符](./07_Attributes.md#access-level-modifier)<sub>可选</sub> **extension** [类型标识](./03_Types.md#type_identifier) [类型继承子句](./03_Types.md#type_inheritance_clause)<sub>可选</sub> [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [扩展主体](./06_Declarations.md#extension_body)
 >
 > *扩展主体* → **{** [扩展成员集](./06_Declarations.md#declarations)<sub>可选</sub> **}**
 >
@@ -1450,9 +1450,9 @@
 >
 > *下标声明* → [下标头](./06_Declarations.md#subscript_head) [下标结果](./06_Declarations.md#subscript_result) [泛型 where 子句](./09_Generic_Parameters_and_Arguments.md#generic_where_clause)<sub>可选</sub> [getter-setter 关键字块](./06_Declarations.md#getter_setter_keyword_block)
 >
-> *下标头（Head）* → [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub> **subscript** [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [参数子句](./06_Declarations.md#parameter_clause)
+> *下标头（Head）* → [特性](./07_Attributes.md#attributes)<sub>可选</sub> [声明修饰符集](./06_Declarations.md#declaration_modifiers)<sub>可选</sub> **subscript** [泛型参数子句](./09_Generic_Parameters_and_Arguments.md#generic_parameter_clause)<sub>可选</sub> [参数子句](./06_Declarations.md#parameter_clause)
 >
-> *下标结果（Result）* → **->** [属性集](./07_Attributes.md#attributes)<sub>可选</sub> [类型](./03_Types.md#type)
+> *下标结果（Result）* → **->** [特性](./07_Attributes.md#attributes)<sub>可选</sub> [类型](./03_Types.md#type)
 >
 
 <!-- -->
@@ -1465,16 +1465,16 @@
 >
 > *后置运算符声明* → **postfix** **operator**  [运算符](./02_Lexical_Structure.md#operator)
 >
-> *中置运算符声明* → **infix** **operator**  [运算符](./02_Lexical_Structure.md#operator) [中置运算符属性集](./06_Declarations.md#infix_operator_attributes)<sub>可选</sub>
+> *中置运算符声明* → **infix** **operator**  [运算符](./02_Lexical_Structure.md#operator) [中置运算符特性](./06_Declarations.md#infix_operator_attributes)<sub>可选</sub>
 >
-> *中置运算符属性集* → [优先级组名](./06_Declarations.md#precedence_group_name)
+> *中置运算符特性* → [优先级组名](./06_Declarations.md#precedence_group_name)
 >
 
 > 优先级组声明语法
 >
-> *优先级组声明* → **precedencegroup** [优先级组名](./06_Declarations.md#precedence_group_name) **{** [优先级组属性集](./06_Declarations.md#precedence_group_attributes)<sub>可选</sub> **}**
+> *优先级组声明* → **precedencegroup** [优先级组名](./06_Declarations.md#precedence_group_name) **{** [优先级组特性](./06_Declarations.md#precedence_group_attributes)<sub>可选</sub> **}**
 >
-> *优先级组属性集* → [优先级组属性](./06_Declarations.md#declarations) [优先级组属性集](./06_Declarations.md#declarations)<sub>可选</sub>
+> *优先级组特性* → [优先级组属性](./06_Declarations.md#declarations) [优先级组特性](./06_Declarations.md#declarations)<sub>可选</sub>
 >
 > *优先级组属性* → [优先级组关系](./06_Declarations.md#declarations)
 >
@@ -1533,7 +1533,7 @@
 >
 > *属性参数子句* → **{** [平衡令牌集](./07_Attributes.md#balanced_tokens)<sub>可选</sub>  **}**
 >
-> *属性（Attributes）集* → [属性](./07_Attributes.md#attribute) [属性集](./07_Attributes.md#attributes)<sub>可选</sub>
+> *属性（Attributes）集* → [属性](./07_Attributes.md#attribute) [特性](./07_Attributes.md#attributes)<sub>可选</sub>
 >
 > *平衡令牌集* → [平衡令牌](./07_Attributes.md#balanced_token) [平衡令牌集](./07_Attributes.md#balanced_tokens)<sub>可选</sub>
 >