一目了然的事儿。 h = h0 - 1/2 gt2前,总在纠结:刮风了怎么办?你说能怎么办?我给的评语为浆糊。君以为何?
一目了然的事儿。 h = h0 - 1/2 gt2前,总在纠结:刮风了怎么办?你说能怎么办?我给的评语为浆糊。君以为何?
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