| 释义 |
〔parachute〕Any of various similar unpowered devices that are used for retarding free-speeding or free-falling motion.缓降物：用于阻碍加速前进或自由落体运动的几种类似无动力装置中的一种〔jetfoil〕A passenger-carrying hydrofoil that is propelled by a jet engine.喷流水翼船：由喷气动力装置驱使的载客水艇〔jetpack〕A backpack that is maneuvered by jets and permits an astronaut to move about alone in space away from a spacecraft.背包：装有喷气式动力装置且可以使宇航员在离开宇宙飞船后能独自在宇宙空间行走的背包 |