It is death if it stands still. A thousand millions scrabbled the crust of the earth.

机器停止就意味着死亡。十亿人在地球表面上乱跑。

It had to do with the outer shell, or crust, of the earth. The earth's crust is divided into different pieces, or plates.

它与地球的外壳（地壳）有关。地壳被分成不同的板块。

The yet elastic and yielding crust of the earth obeyed the fluid forces beneath.

具有弹性和屈服性的地壳服从下面的流体力。

Ocean ridges, where most of  the new crust of the Earth's surface is formed, lie at relatively shallower depths.

地球表面大部分新地壳形成于海脊，这些海​​脊位于相对较浅的深度。

" Why, this is the very limit assigned by science to the thickness of the crust of the earth."

“哎呀，这就是科学对地壳厚度的极限。”

Could he be trying to measure the thickness of the crust of the earth that lay between us and the world above?

他可能是在试图测量我们和上面世界之间的地壳厚度吗？

The crust of the earth, with its embedded remains, must not be looked at as a well-filled museum, but as a poor collection made at hazard and at rare intervals.

地球的地壳及其嵌入的遗迹， 不能被看作是一个内容丰富的博物馆， 而应该被看作是一个在危险和罕见的时间间隔内收集的贫乏的收藏品。