谢谢。有点苦恼，什么时候正确发音可以become 2nd nature?

来源: jingbeiboy 于 2012-06-24 21:34:37 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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谢谢。 有点苦恼， 什么时候正确发音可以become 2nd nature?