英语语法分析

Spaceships are very precious and great.

宇宙飞船非常珍贵、非常伟大。

They launched at least 2 spaceships into outer space each year.

他们每年至少向外太空发射两艘宇宙飞船。

Regular engines push spaceships by burning fuel.

普通发动机靠燃烧燃料来发动飞船。