catapult，
英语单词，主要用作名词、动词，作名词时译为“弹弓；石弩；（从舰船上弹射飞机的）弹射器；（飞机上的）座椅弹射器”，作动词时译为“猛投；用弹弓射，用弹射器发射；（仿佛被弹射般地）突然快速移动；使突然处于”。
1.V-T/V-I If someone or something catapults or is catapulted through the air, they are thrown very suddenly, quickly, and violently through it. 弹射
2.V-T/V-I If something catapults you into a particular state or situation, or if you catapult there, you are suddenly and unexpectedly caused to be in that state or situation. 使突然处于; 突然处于
3.N-COUNT A catapult is a device for shooting small stones. It is made of a Y-shaped stick with a piece of elastic tied between the two top posts. 弹弓 [英国英语]