1. The Moon is likely to become the industrial hub of the Solar System, supplying the rocket fuels for its ships, easily obtainable from the lunar rocks in the form of liquid oxygen.
    月球很可能成为太阳系的工业中心。从月球上的岩石中很容易提炼出液态氧，作为航天飞船的燃料。

2. To escape from the Earth in a rocket, one must travel at seven miles per second.
    要乘坐一枚火箭飞离地球，火箭的速度要达到每秒7英里，

3. A rocket under the seat will pop you out of the aircraft, seat and all.
    你座位下的火箭会把你连同座位一起弹出机舱。

4. Man can made space rocket.
    人类可以制造宇宙火箭.