哈哈,也是这样.我现在跟着弟弟一起学一下物理. 感觉有些概念我也是是而非,等自己把说看了,才能跟弟弟一起讨论.

来源: Pilsung 于 2024-09-08 12:34:21 [旧帖] [给我悄悄话] 本文已被阅读：次

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