冷却 (lěng què): to cool off; cooling

Mom put the freshly boiled soup on the windowsill to cool for a bit before giving it to the child, so as not to burn his mouth.

After the competition ended, the athletes walked slowly along the track to let their bodies gradually cool down and avoid muscle strains.

When two people argue, they are both in a hot temper. If they separate for ten minutes first and wait for their emotions to cool down before talking properly, they won't say hurtful things.

After machining, metal parts are very hot. They must be placed in a ventilated area to cool to room temperature before the next measurement step can be carried out.