From 06ba8c5ab2b36cd61c14d8418530472c1062c43d Mon Sep 17 00:00:00 2001
From: TheLittleBoy <TheLittleBoy@users.noreply.github.com>
Date: Thu, 3 Jul 2014 16:49:12 +0800
Subject: [PATCH] =?UTF-8?q?42195.0=E7=B1=B3?=
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马拉松的长度是42195，代码错写成了42495。特此更正。
---
 source/chapter2/20_Extensions.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/chapter2/20_Extensions.md b/source/chapter2/20_Extensions.md
index 71e493d9..53bbd67c 100755
--- a/source/chapter2/20_Extensions.md
+++ b/source/chapter2/20_Extensions.md
@@ -81,7 +81,7 @@ println("Three feet is \(threeFeet) meters")
 ```swift
 let aMarathon = 42.km + 195.m
 println("A marathon is \(aMarathon) meters long")
-// 打印输出："A marathon is 42495.0 meters long"
+// 打印输出："A marathon is 42195.0 meters long"
 ```