跑道中间高，边上低，比较平。我想大概是为了防止积水。

来源: xxq2001 于 2013-11-01 19:03:42 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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跑道中间高，边上低， 比较平。 我想大概是为了防止积水。