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[时差N小时] 时差N小时:锋利的刀刃有何特别之处?(上)
Everyone knows that a sharp knife cuts better than a dull one, but do you know why, exactly?众所周知,锋利的刀刃比钝刀更加锋利,但你知道原理吗?2019-08-07 编辑:clover
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[时差N小时] 时差N小时:锋利的刀刃有何特别之处?(下)
Everyone knows that a sharp knife cuts better than a dull one, but do you know why, exactly?众所周知,锋利的刀刃比钝刀更加锋利,但你知道原理吗?2019-08-08 编辑:clover