become quiet or calm, especially after a state of agitation;
"After the fight both men need to cool off."
"It took a while after the baby was born for things to settle down again."
- His heart rate doubled and his muscles relaxed, even so he flinched as it fell.
- It is a rare occurrence on Wall Street when you can exhale, relax and enjoy your good fortune.
- play it cool 抑制住感情(持冷漠态...