n steadiness of mind under stress
n wind moving at less than 1 knot; 0 on the Beaufort scale
v make calm or still
v make steady
v become quiet or calm, especially after a state of agitation
v cause to be calm or quiet as by administering a sedative to
n. 安静( calm的名词复数 )
v. （使）平静, （使）镇定( calm的第三人称单数 ); 使安静; 使冷静; 使镇定