This is not a fire drill—it's for real.

这不是救火演习—是真失火了。

《牛津词典》

Practicing a fire alarm drill similar to those done in school is a smart way to give kids a dry run of what should occur if the fire alarm goes off

提前在家里让孩子们进行火警演练，就像在学校里那样，这样做是非常明智的。

youdao

I know that we should find a wet towel and find a way out when there is a fire. But I never participated in a drill.

我知道起火的时候，我们应该找一条湿毛巾，找出路。但是我从没有参加过演练。

youdao

But some anti-tax absolutists have decided that closing any tax loophole amounts to a tax hike unless it is deficit neutral -- ignoring the whole reason for engaging in this forced fire drill.

CNN: Our stupid self-inflicted debt crisis