Ruby学习四 学习网站
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http://blog.csdn.net/ruby_cn
http://wiki.yepn.net/ruby#基础
http://www.neocanable.com/category/ruby/
http://simohayha.iteye.com/category/15272
http://www.cnblogs.com/wanana/archive/2010/02/05/1664104.html
