I repeat, level one, this is not a drill!

重复， 一级警报， 这不是演习！

youdao

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》

Stacked near the checkout counters, and as colorful as a Fisher-Price toy, it is a not-so-serious-looking power tool: a battery-operated saw-and-drill combination.

堆在收银台附近，像费雪玩具一样颜色鲜艳的它，是一个看起来不那么严肃的电动工具：一个电池驱动的锯和钻的组合。

youdao

Because it's not, as he said, it's not a drill and I think again from the state level from the federal level.

NPR: New Orleans Family Heads North

This was not a military drill but a search and rescue exercise.

NPR: U.S., China Navies Join Forces on Rescue Exercise

For instance, passengers on the Costa Concordia had not completed a lifeboat safety drill, because ships have 24 hours after setting sail to hold the drill.

BBC: What is the safest mode of travel?