宇航员启动了推进器来调整空间站的轨道。

The astronaut fired the ___thrusters to adjust the space station's orbit.

他用肩膀充当推力器，把卡住的卡车推了出来。

He used his shoulder as a ___thruster to push the stuck truck out.

冲浪板上的推进器能帮助你在大浪中保持平衡。

The ___thruster on the surfboard helps you maintain balance in big waves.