她等到咖啡凉下来，然后喝了一小口。

She waited until her coffee had ___cooled ___down and then took a sip.

我们去游泳凉快一下。

We went for a swim to ___cool ___off.

你应该先让热汤凉下来再吃。

You should ___cool the hot soup ___down before eating it.