And so the distance that it will travel in horizontal direction is four times that-- twice because the time has doubled and another factor of two because the horizontal component has also doubled.
因此水平移动距离,扩大了四倍,因为除了时间加倍了之外,还有另外一个自变量,速度水平分量也加倍了。
If a light illuminates a certain space, its intensity at twice the distance is not twice as feeble, but two times two, equal four times, as feeble.
如果一个光源照亮某一个地方，这个地方距离光源越远，光照强度会越弱，但是光照强度并不是与光源距离等比例地减弱，就是说，距离延长两倍，光照强度并不是减弱两倍，而是减弱两倍的两倍，等于减弱四倍；
At this time he had a hand, hand on desktop instant, the existing four, bounce after joining together of two MEDALS, look at twice the thickness is not the same.
此时他手中已经有一枚，手拍桌面瞬间，已有四枚，弹起后两枚合一，仔细看两遍厚度不一样。
At this time he had a hand, hand on desktop instant, the existing four, bounce after joining together of two MEDALS, look at twice the thickness is not the same.
此时他手中已经有一枚，手拍桌面瞬间，已有四枚，弹起后两枚合一，仔细看两遍厚度不一样。
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