So now we have a ground body. We can use the same technique to create a dynamic body.

我们已经有了一个地面体，我们可以使用同样的方法来创建一个动态物体。

youdao

With the world defined, you specify the ground body within that world and its position.

定义了此世界后，就可以指定该世界内的地面体及其位置了。

youdao

We finish the ground body in step 4 by creating the ground polygon shape on the ground body.

在第四步中，我们将创建的地面多边形引入地面盒子对象中，从而完成了地面盒子的创建。代码如下。

youdao

This makes it more difficult for the body to effectively use the same amount of oxygen as it would on the ground.

VOA: special.2009.07.14

Picture my body lying on the ground unconscious.

想像我的身体无知觉地躺在地上。

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Experts say the body begins losing oxygen minutes after an airplane leaves the ground.

VOA: special.2009.07.14

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The wife of a Brazilian runner, Cas Camara, who came in dead last far past the 60-hour mark, screamed and cried and begged her husband, who had fallen to the ground, his body seemingly wasted, to get up, get up and finish.

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The 6-year-old's family says they found her body on nearby ground used as an outdoor toilet, a few hours after she went missing.

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