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ohai

Rank: 2

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222303 
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400 
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注册时间
2011-7-2 
最后登录
2015-11-28 
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发表于 2011-7-11 19:21 | 显示全部帖子
anyone have a mnemonic for remembering these? i hate that i think of them both as ecns and need to do a double take every time.

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