calm down
近义词：lull，calm，quiet，quieten，tranquillise，coolit，settledown，still，cooloff，simmerdown，tranquillize，tranquilize，chillout，
英英释义
Verb
- 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."
- make calm or still;
"quiet the dragons of worry and fear"
- become quiet or less intensive;
"the fighting lulled for a moment"