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要是没有了惯性,世界上就不会有那么多战争了。你想,枪子刚一离开枪口,吧嗒一声就掉地上了。打谁去丫?
heater
(肠子)
(#182491@0)
Last Updated: 2001-8-28
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惯性是什么?
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