逗死我了,a ski accident trial brought out this:
所有跟帖:
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動能守恒定律
-又到了秋天-
♂
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03/31/2023 postreply
13:42:38
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Is it? 我全忘光了
-平常之心-
♂
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03/31/2023 postreply
13:43:43
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kinatic energy k.e = 1/2mv^2
-又到了秋天-
♂
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03/31/2023 postreply
13:53:21