船厂发言人表示，他们希望在未来两年内发射第一艘潜艇。

A spokesman for the dockyard said they hoped to ___launch the first submarine within two years.

军方决定发射一枚导弹。

The military decided to ___launch a missile.

我们的祖父母或祖父母的父母能想象有一天，我们能够发射火箭，让卫星在天空飞行吗？

Could our grandparents or grandparents' parents imagine that one day, we would be able to ___launch rockets, to have satellites in the sky?