calm down

平静下来；镇定下来

call-girl, call-in, call-up, call...to account, caller, calligrapher, calligraphy, calling, calling-card, calliper (also caliper), callisthenics (also calisthenics), callosity, callous, calloused, callously, callousness, callow, callowness, callus, calm, calmly, calmness, Calor gas, calorie, calories, calorific, calorimeter, calory, calumniate, calumnious, calumny, calve, calves, Calvinism, Calvinist, calypso, calyx, cam, camaraderie, camber,