Police say she was cool and collected during her interrogation.警方说她在审问过程中表现得冷静自若。I'd never seen him like this, so sure of himself, so in command.我从来没见他如此自信满满、指挥自若。It's not everybody who can keep as cool as a cucumber in an emergency.并不是人人都能在危急时刻保持镇定自若的。