* minor tweaks

README-cn.md

@@ -684,8 +684,8 @@
 - [ ] [选择排序 (video)](https://www.youtube.com/watch?v=6nDMgr0-Yyo&index=8&list=PL89B61F78B552C1AB)
 
 - [ ] 斯坦福大学关于排序算法的视频:
-    - [ ] [Lecture 15 | Programming Abstractions (video)](https://www.youtube.com/watch?v=ENp00xylP7c&index=15&list=PLFE6E58F856038C69)
-    - [ ] [Lecture 16 | Programming Abstractions (video)](https://www.youtube.com/watch?v=y4M9IVgrVKo&index=16&list=PLFE6E58F856038C69)
+    - [ ] [课程 15 | 编程抽象 (video)](https://www.youtube.com/watch?v=ENp00xylP7c&index=15&list=PLFE6E58F856038C69)
+    - [ ] [课程 16 | 编程抽象 (video)](https://www.youtube.com/watch?v=y4M9IVgrVKo&index=16&list=PLFE6E58F856038C69)
 
 - [ ] Shai Simonson 视频, [Aduni.org](http://www.aduni.org/):
     - [ ] [算法 - 排序 - 第二讲 (video)](https://www.youtube.com/watch?v=odNJmw5TOEE&list=PLFDnELG9dpVxQCxuD-9BSy2E7BWY3t5Sm&index=2)
@@ -698,10 +698,10 @@
     - [ ] [课程从 23:50 开始 (video)](https://www.youtube.com/watch?v=TvqIGu9Iupw&list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b&index=10)
 
 - [ ] 加州大学伯克利分校（UC Berkeley） 大学课程:
-    - [ ] [CS 61B Lecture 29: Sorting I (video)](https://www.youtube.com/watch?v=EiUvYS2DT6I&list=PL4BBB74C7D2A1049C&index=29)
-    - [ ] [CS 61B Lecture 30: Sorting II (video)](https://www.youtube.com/watch?v=2hTY3t80Qsk&list=PL4BBB74C7D2A1049C&index=30)
-    - [ ] [CS 61B Lecture 32: Sorting III (video)](https://www.youtube.com/watch?v=Y6LOLpxg6Dc&index=32&list=PL4BBB74C7D2A1049C)
-    - [ ] [CS 61B Lecture 33: Sorting V (video)](https://www.youtube.com/watch?v=qNMQ4ly43p4&index=33&list=PL4BBB74C7D2A1049C)
+    - [ ] [CS 61B 课程 29: 排序 I (video)](https://www.youtube.com/watch?v=EiUvYS2DT6I&list=PL4BBB74C7D2A1049C&index=29)
+    - [ ] [CS 61B 课程 30: 排序 II (video)](https://www.youtube.com/watch?v=2hTY3t80Qsk&list=PL4BBB74C7D2A1049C&index=30)
+    - [ ] [CS 61B 课程 32: 排序 III (video)](https://www.youtube.com/watch?v=Y6LOLpxg6Dc&index=32&list=PL4BBB74C7D2A1049C)
+    - [ ] [CS 61B 课程 33: 排序 V (video)](https://www.youtube.com/watch?v=qNMQ4ly43p4&index=33&list=PL4BBB74C7D2A1049C)
 
 - [ ] - 归并排序:
     - [ ] [使用外部数组](http://www.cs.yale.edu/homes/aspnes/classes/223/examples/sorting/mergesort.c)
@@ -848,9 +848,9 @@
         - [ ] [NP-完全性 III (Video)](https://www.youtube.com/watch?v=fCX1BGT3wjE&index=17&list=PLFDnELG9dpVxQCxuD-9BSy2E7BWY3t5Sm)
         - [ ] [NP-完全性 IV (video)](https://www.youtube.com/watch?v=NKLDp3Rch3M&list=PLFDnELG9dpVxQCxuD-9BSy2E7BWY3t5Sm&index=18)
     - [ ] Skiena:
-        - [ ] [CSE373 2012 - Lecture 23 - 介绍 NP-完全性 IV (video)](https://youtu.be/KiK5TVgXbFg?list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b&t=1508)
-        - [ ] [CSE373 2012 - Lecture 24 - NP-完全性证明 (video)](https://www.youtube.com/watch?v=27Al52X3hd4&index=24&list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b)
-        - [ ] [CSE373 2012 - Lecture 25 - NP-完全性挑战 (video)](https://www.youtube.com/watch?v=xCPH4gwIIXM&index=25&list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b)
+        - [ ] [CSE373 2012 - 课程 23 - 介绍 NP-完全性 IV (video)](https://youtu.be/KiK5TVgXbFg?list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b&t=1508)
+        - [ ] [CSE373 2012 - 课程 24 - NP-完全性证明 (video)](https://www.youtube.com/watch?v=27Al52X3hd4&index=24&list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b)
+        - [ ] [CSE373 2012 - 课程 25 - NP-完全性挑战 (video)](https://www.youtube.com/watch?v=xCPH4gwIIXM&index=25&list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b)
     - [ ] [复杂度: P, NP, NP-完全性, 规约 (video)](https://www.youtube.com/watch?v=eHZifpgyH_4&list=PLUl4u3cNGP6317WaSNfmCvGym2ucw3oGp&index=22)
     - [ ] [复杂度: 近视算法 Algorithms (video)](https://www.youtube.com/watch?v=MEz1J9wY2iM&list=PLUl4u3cNGP6317WaSNfmCvGym2ucw3oGp&index=24)
     - [ ] [复杂度: 固定参数算法 (video)](https://www.youtube.com/watch?v=4q-jmGrmxKs&index=25&list=PLUl4u3cNGP6317WaSNfmCvGym2ucw3oGp)
@@ -1081,7 +1081,7 @@
     - [ ] [James Bach 软件测试公开课 (video)](https://www.youtube.com/watch?v=ILkT_HV9DVU)
     - [ ] [Steve Freeman - 测试驱动的开发 (video)](https://vimeo.com/83960706)
         - [slides](http://gotocon.com/dl/goto-berlin-2013/slides/SteveFreeman_TestDrivenDevelopmentThatsNotWhatWeMeant.pdf)
-    - [ ] [测试驱动的开发已死. 测试不朽。](http://david.heinemeierhansson.com/2014/tdd-is-dead-long-live-testing.html)
+    - [ ] [测试驱动的开发已死。测试不朽。](http://david.heinemeierhansson.com/2014/tdd-is-dead-long-live-testing.html)
     - [ ] [测试驱动的开发已死? (video)](https://www.youtube.com/watch?v=z9quxZsLcfo)
     - [ ] [视频系列 (152 个) - 并不都是必须 (video)](https://www.youtube.com/watch?v=nzJapzxH_rE&list=PLAwxTw4SYaPkWVHeC_8aSIbSxE_NXI76g)
     - [ ] [Python：测试驱动的 Web 开发](http://www.obeythetestinggoat.com/pages/book.html#toc)