So we have initialized the ground box and a dynamic box. Now we are ready to set Newton loose to do his thing.

前面我们已经初始化了地面盒子和一个动态盒子，接下的工作将由牛顿去做（根据牛顿定理去模拟）。

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She dropped the box onto the ground and it was broken.

她把盒子掉在了地上摔坏了。

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The two men pulled the box out of the ground and opened it.

这两个人把箱子从地下拉了出来，然后打开了它。

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While Schwarzenegger and Stallone may have lost ground with American moviegoers their box office clout in the rest of the world has remained relatively strong.

BBC: Sylvester Stallone meets his match in Driven

The cheapest box, into the ground immediately, no ceremony of any kind.

NEWYORKER: Free Radicals

Rankin burst into the box and went to ground as he was challenged by Marius Zaliukas and referee Dougie MacDonald pointed to the spot.

BBC: Sport - Football - Hibernian 1-2 Hearts