balloon dilator

例句：

1. 1.The balloon dilator was used to inflate the balloon during the flight.
   在飞行过程中，气球扩张器被用来给气球充气。
2. 2. The balloon dilator was acrucial tool for astronauts duringspace missions.
   气球扩张器是宇航员在太空任务中至关重要的工具。
3. 3. The balloon dilator was designed to prevent the balloon fromcollapsing during the descent.
   气球扩张器被设计成在下降过程中防止气球塌陷。