Wait. They're probably just here to show their faces and make a quick exit.

等等，他们也许只是过来露个面然后就会马上离开了。

They made a quick exit when they saw the police approaching.

【exit】看见警察来了，他们便迅速离去。

Luckily for us, almost 99 percent of the uranium that enters our body through food also makes a quick exit through our feces.

对我们来说幸运的是，几乎 99% 通过食物进入我们体内的铀也会通过我们的粪便快速排出体外。