catapult

1.The boy surrendered the catapult to the teacher.

那孩子把交给了老师。

2.Alexander’s engineers built floating rafts for the heavy catapults.

亚历山大的工兵修建了浮动的筏子来运载沉重的弩炮。

3.The articulation of the theory of relativity catapulted Albert Einstein to the pinnacle of fame.

相对论的问尔伯特·爱因斯坦推到了名誉的顶峰。

4.Onboard aircraft were of mainly the floatplane type.They were stored above deck, usually within the center region of the ship on a small catapult used to launch the aircraft into the air.

（大意）这些舰载飞机大部分都是水上飞机，平时放置于船舯甲板上的器以便飞机至空中。