1. He had many ships which traded with othercountries. Now his ships were all at sea.
    他拥有许多船只，与别的国家进行贸易。这时，他的船都在海上。

2. He had travelled only seven miles across the Channel when his engine failed and he was forced to land on the sea.
    但他只在海峡上空飞行7英里，引擎就发生了故障，他只好降落在海面上。

3. His engine failed and he landed on the sea for the second time.
    因引擎故障第二次降落在海面上。

4. Had he been walking north, away from the camp, toward the sea? He started slowly toward the ship, knowing full well the sick wolf was following him.
    难道他一直朝北走，离营地越来越远，走到海边来了？他站起身慢慢地向船走去，心里完全明白那条病狼准跟在后面。

5. Do you like sea?
    你喜欢海吗?

6. And by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
    测出回声间隔的时间，便可算出该处海洋的深度。

7. During the conversation, the President brought up the question of access to the Baltic Sea, but through a mistake in translation Stalin thought the President was referring to the Baltic States.
    谈话中总统提到了通向波罗的海航道的问题，但由于翻译的差错，斯大林以为总统在谈波罗的海国家。

8. A sound made by taping on the hull of a ship will be reflected from the sea bottom.
    轻叩船体发出的声响会从海底反射回来,

9. Almost any day a young porpoise may be seen trying to turn a 300-pound sea turtle over by sticking his snout under the edge of his shell and pushing up for dear life.
    几乎每天都可以看到一只小海豚把鼻子顶入一只300磅重的海龟的硬壳下面，拼命地把它翻过来。

10. A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
    通过敲击空船发出的声音将会从海底反射回来。