又看了一遍原帖, lz说的有句话倒是挺认同的

来源: Oneshotkill 于 2016-02-23 07:59:52 [旧帖] [给我悄悄话] 本文已被阅读：次

"从合理使用角度来讲，若遇下长坡应提前挂入低档"

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