1. calm down : 平静下来, 镇定下来；
形容词
及物动词
不及物动词
名词
叫救护车
1. 镇定的;镇静的;冷静的
A calm person does not show or feel any worry, anger, or excitement.
1. steadiness of mind under stress
e.g. he accepted their problems with composure and she with equanimity
Synonym: composurecalmnessequanimity
2. wind moving at less than 1 knot
0 on the Beaufort scale
Synonym: calm air