1. The seed was sprayed over the ground in huge quantities by aeroplanes.
    飞机把这些草籽大量地撒在地面上.

2. The stagnant water was a breeding ground for disease.
    污浊的死水是疾病的孳生地。

3. The ground vibrated during the earthquake.
    地震时地面震动。

4. The ground is wet after rain.
    雨后地上是湿的。

5. The shape and dimensions of the skyscrapers depend entirely on the necessity of obtaining the maximum income per square foot of ground, and of offering to the tenants offices and apartments that please them.
    摩天大楼完全是按这样的需要修建的：每平方英尺地皮取得最大收入和向租房人提供使他满意的办公室和住房。

6. The ideal to be aimed at was to devise an instrument that could record with a pen on paper, the movements of the ground or of the table as the quake passed by.
    理想的目标是设计出这样一种仪器：当地震发生时，它能用笔在纸上记录下大地和桌子运动情况。

7. The seeds must be carefully chosen; they must fall on good ground; they must be sedulously tended, if the vivifying fruits are to be at hand when needed.
    要想在需要的时候可随手摘取充满生机的果实，那就必然从选良种做起，然后将其植入肥沃的土地，还需要勤勉地护理。

8. This increases their air-resistance and reduces the shock of impact when they hit the ground.
    这样就加大了空气阻力，并减少了它们着地时冲击力带来的震动。

9. The young man did not wake up until the bed had struck the ground.
    那年轻人直到床撞到地上才醒了过来。

10. The leader of the party was examining the soil near the entrance to the cave when the machine showed that there was gold under the ground.
    当这个队的队长正在检查洞口附近的土壤时，那台机器显示出它的下面埋有金子。