He was marvellously cool again, smiling as if nothing had happened.

他又变得出奇的冷静，微笑着，似乎什么都没有发生过一样。

《柯林斯英汉双解大词典》

If you consistently lose your cool with your kids, then you are inadvertently modeling a lack of emotional control for your kids.

如果你总是对你的孩子失去冷静，那么你就无意中为孩子树立了缺乏情绪控制力的典范。

youdao

If I were you, I'd let her cool off a few days before I approach her.

如果我是你，我会在接近她之前让她冷静几天。

youdao

If big-city apartment markets cool or stagnate, renting will save you cash.

FORBES: Let Your Landlord Sweat Instead

Analogously, a hot cup of coffee will always cool down if left - it will never draw warmth from a room to heat back up.

BBC: Entropy law linked to intelligence, say researchers

Look for OnAir service to drop initially on short flights in Western Europe, though Airbus intends to take it global -- if the FAA's cool with it, anyway.

ENGADGET: Airbus gets Euro approval for in-flight calling system