1. He had a fascination for submarines and joined this branch of the service. 他迷恋潜艇并加入了海军的这个分支。
2. Ask anyone who has ever served on one. They'll tell you there are only two types of ships in the world: submarines and targets. 去问任何曾经服过兵役的人吧。他们会告诉你世界上只有两种船:潜艇和目标。
3. After this technique had been invented, it was only a matter of time before weapons designers adapted it for the detection of submarines. "这项技术被发明之后,武器设计者将其改造用来探测潜艇只是时间早晚的问题。
4. Both submarines remained safe. 双方潜艇仍然安全。
5. The submarines took pictures of the wreckage. 这些潜艇拍到了飞机残骸的照片。