试题题干
Translate the following sentence into Chinese.
If spaceships were launched from space or from the moon, the absence of weight would permit the ships to be launched with great speed at reduced pressures.
参考答案
试题解析
考点：spaceship宇宙飞船；the absence of weight失重现象；permit 允许；at reduced pressures在压力减小的情况下。
句子结构：If引导条件状语从句，主句为the absence of weight would permit the ships···。