1. Eventually the turtle has been butted all the way down to the floor of the tank.
    这只海龟最终被撞到池底。

2. Engineers say a disaster is unlikely in the Chunnel because it wouldn't be flooded by a bomb. The tunnel is too far beneath the sea floor.
    工程师说隧道里不可能发生意外灾难，因为它不可能被炸弹炸开而涌进水，隧道在海底的深处。

3. By building the city both deep into the ground and high above it, there would be room for far more people and everything else than there is in today´s two dimensional city.
    由于这种城市既建在地下深处，又造在地上高空中，所以能容纳的人和其它各种东西会比今天的平面城市多得多。

4. It is quite reasonable to regard the sea floor as the basic form of the crust of the earth, with, superimposed upon, it the continents, together with the islands and other features of the oceans.
    因此完全有理由把海床看作地壳的基本模壳，上面附加着大陆以及岛屿和海洋的其他形态。

5. With the hand held high in the air, hold the string so that the weight nearly touches the ground.
    把手高高举在空中握住绳子，让重物几乎接触地面。

6. When it did so, it sent sparks down to the ground and these immediately started a fire.
    当它这样做时，把火花送到了地面，这些火花立刻引起了一场大火。

7. While we were having breakfast, our little boy, Tommy, found two small coins on the floor.
    正当我们吃早饭时，我们的小男孩汤米在地上找到两枚小硬币。

8. Well, I measured the distance of ground, and calculated how deep it was to be dug, how broad, and how the earth to be thrown out.
    接着，我测量了一下距离，计算了一下该挖多深、多宽，以及怎样把土运走。

9. Water is in rock deep under the ground, in natural holding areas -- in storage.
    水深藏于地底下的岩层里、在天然蓄水区里 -- 水就储存在那里。

10. We weren't up to trying our act at an exclusive restaurant, so we wandered around the first floor and left.
    我们的演技还达不到上高档餐厅一试身手的水平，所以我们在底楼兜了一圈就走了。