3771| 15
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閑來無事做一個(gè)小球的動(dòng)畫 |
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點(diǎn)評(píng)
誰告訴你水平速度要受到影響的,,運(yùn)動(dòng)學(xué)都是有假設(shè)的,,你的假設(shè)不等于別人的假設(shè)
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點(diǎn)評(píng)
不要了,。小師妹(姐)后來那段怎么樣了,?
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