hull-borne engine unit

例句：

1. 1. The ship's engineunit is responsible for propelling theship forward.
   船体引擎单元负责推动船只前进。
2. 2. The hull-borne engineunit is a crucial component of the ship's power system.
   船体引擎单元是船舶动力系统的至关重要的组成部分。
3. 3. The engineers carefully dismantled thehull-borne engine unit to inspectits components.
   工程师们仔细拆解了船体引擎单元，以检查其部件。