防空系统击落了一枚入侵领空的导弹。

The defense system ___shot down a missile that entered the airspace.

他刚提出建议就被老板当场否决了。

The boss immediately ___shot down his suggestion without discussion.

士兵们奉命射杀了那个试图逃跑的囚犯。

The soldiers were ordered to ___shoot down the escaping prisoner.