n.鎮(zhèn)靜；沉著

Keep calm; don't lose your composure. 保持鎮(zhèn)靜，不要驚慌失措。

He could see that she was struggling to preserve her composure. 他看出她是竭力故作鎮(zhèn)定。

He showed great composure in difficult situations. 他在困難環(huán)境中表現(xiàn)得極沉著。

n.失態(tài)；慌張