所以，这就是,我要做的功,从无穷远处移到这点，也就是距离这个物体，距离为R处。

So here comes the work that Walter Lewin has to do when we go from infinity to that point, which is capital R, radius, from this object.

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然而当天本驻扎在离核电站3英里的日本核监察组成员撤移到18英里远处。

The same day, however, members of Japan's nuclear watchdog group, who had been stationed about three miles from the plant, were moved to a site 18 miles away.

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