舌头是紧张的。你说上下牙间隙小，也可，因为嘴唇也是紧张的（而ei的嘴唇是放松的）。

来源: beautifulwind 于 2011-08-08 09:49:38 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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