英汉词典

1. 潜艇(亦使用缩略形式sub)
    A submarine is a type of ship that can travel both above and below the surface of the sea. The abbreviation sub is also used.

    e.g. ...a nuclear submarine.
           核潜艇

2. 水下的;海底的
    Submarine means existing below the surface of the sea.

submarine在线翻译

    e.g. ...submarine caves.
           海底洞穴
    e.g. ...submarine plants.
           海底植物

3. 潜艇三明治，长卷三明治(亦使用缩略形式sub)
    A submarine sandwich is a long soft bread roll filled with a combination of things such as meat, cheese, eggs, and salad. The abbreviation sub is also used.