From 990352db8ee3b328d1479ad3dfbffc371e2f34c6 Mon Sep 17 00:00:00 2001
From: Hong Duan <duanhong169@gmail.com>
Date: Wed, 3 Aug 2016 14:12:33 +0800
Subject: [PATCH] Update 02_a_swift_tour.md

---
 source/chapter1/02_a_swift_tour.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/chapter1/02_a_swift_tour.md b/source/chapter1/02_a_swift_tour.md
index 0d5151d9..8e78f23b 100755
--- a/source/chapter1/02_a_swift_tour.md
+++ b/source/chapter1/02_a_swift_tour.md
@@ -615,7 +615,7 @@ case let .Failure(message):
 > 练习：
 > 给`ServerResponse`和`switch`添加第三种情况。
 
-注意如何从`ServerResponse`中提取日升和日落时间并用得到的值用来和`switch`的情况作比较。
+注意日升和日落时间是如何从`ServerResponse`中提取到并与`switch`的`case`相匹配的。
 
 <a name="protocols_and_extensions"></a>
 ## 协议和扩展