port riser

例句：

1. 1. The port riser is essential for the operation of the ship's engine.
   船闸提升机对于船舶发动机的运行至关重要。
2. 2. The port riser was designed to improve efficiency and reduce noise.
   船闸提升机的设计目的是为了提高效率和降低噪音。
3. 3. The port riser has been a topic of discussion in recent years due to its potential impact on navigation safety.
   近年来，由于船闸提升机可能对航行安全产生影响，它已成为讨论的焦点。