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转自： http://blog.csdn.net/longerzone/article/details/32119457
http://www.oschina.net/translate/10-virtualbox-tricks-and-advanced-features-you-should-know-about?print
http://jingyan.baidu.com/article/2fb0ba40541a5900f2ec5f07.html
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原文地址：http://www.cnblogs.com/pinganzi/p/4566526.html
