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The kinetics problem of the weight throw during the throwing and flying has been studied.
从理论上对链球投掷和飞行中存在的一些动力学问题进行了研究。
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While flying in space, astronauts have no weight.
当宇航员在太空中飞行时，他们失去了重量。
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While flying in space, astronauts have no weight.
当宇航员在太空中飞行时，他们失去了重量。
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