aircraft catapult

例句：

1. 1.The aircraft catapult is used to launch rockets into space.
   飞机发射器被用来将火箭送入太空。
2. 2. The aircraft catapult was invented by a scientist who wanted to test the theory of gravity.
   飞机发射器是由一位想要测试重力理论的科学家发明的。
3. 3. The aircraft catapult is a crucial component in launching satellites into orbit.
   飞机发射器是发射卫星进入轨道的关键部件。