Skim the scum off the jam and let it cool.

撇去果酱上的浮沫，让它冷却。

《牛津词典》

Maybe he's trying to cool off out there in the rain.

可能他是想在外面的雨中凉快一下。

《柯林斯英汉双解大词典》

We dived into the river to cool off.

我们一头跳进河里，凉快一下。

《牛津词典》

Take off the victim's clothing. Put cool water on the body.

VOA: special.2010.07.27

You might want to touch the water to cool off.

VOA: special.2009.08.19

They are both looking to transfer with their companies to Utah and plan on renting their suburban home until the foreclosure sales cool off and the housing market turns around.

FORBES: Don't Let Falling Home Prices Ruin Your Retirement Plans

Parts of the two states could cool off by the weekend, but temperatures are likely creep back up by next Monday.

CNN: Heat wave: Oklahoma, Texas endure warmest months on record

The power has gone south to cool off the United States' north-east, which baked in July's heat wave.

ECONOMIST: Canada