说明：  svn ,优秀的，被广泛使用的软件配置工具。是进入软件开发公司必须掌握的工具。请从本文开始学起。快速掌握它！
(svn, excellent, widely used software configuration tool. Is must master the tools into the software development company. From the beginning of this article to learn from. Quickly master it!)