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http://www.quora.com/Gangnam-Style-song/What-are-some-key-success-factors-for-a-video-like-Gangnam-Style-to-go-extremely-viral
您即将离开知乎,请注意您的帐号和财产安全。
http://www.quora.com/Gangnam-Style-song/What-are-some-key-success-factors-for-a-video-like-Gangnam-Style-to-go-extremely-viral