| 1. | The coast line was crowded with u-boat nests . 潜水艇更是集於沿海。 |
| 2. | Everything on the submarine was buttoned up . 潜水艇上的机器都关闭了。 |
| 3. | The submarine was breaking into rainy night . 潜水艇正碰上了雨夜。 |
| 4. | The submarine bottomed on the ocean floor . 潜水艇停在洋底。 |
| 5. | The submarine rose to the surface . 潜水艇升至水面。 |
| 6. | Submarines are already being powered by atomic energy . 潜水艇现在已经由原子能来驱动了。 |
| 7. | The submarine dived . 潜水艇潜水了。 |
| 8. | The small ship came around the headland and steamed toward the u-boat . 一只小艇绕过海岬,嘟嘟地朝潜水艇开去。 |
| 9. | As quickly as possible, we put a destroyer on the tail of every submarine . 于是我们火速派出驱逐舰跟踪每一艘潜水艇。 |
| 10. | The problem of how to contact the u-boat on monday had been nagging at the back of his mind . 星期一如何与潜水艇联系呢?这个问题一直在他头脑中盘旋。 |