push-off stack

例句：

1. 1. The engineer designeda push-off stack to help theboat move faster through the water.
   工程师设计了一个推离堆栈，帮助船只在水中更快地前进。
2. 2.The push-off stack wasused in the construction of the newbridge, providing a stable foundation for thebridge's weight.
   在建造新桥的过程中使用了推离堆栈，为桥梁的重量提供了稳定的支撑。
3. 3. The push-off stack is anessential component of the spacecraft's propulsion system,allowing it to maintain its position in space.
   推离堆栈是航天器推进系统的必备组件，它使航天器能够在太空中保持其位置。