1.Don't fly off the handle. Calm down. 你先把火头压一压，别着急。
2.I tried to calm her down, but it was not possible, so she kept screaming all throughout the night. 我努力使她保持镇定，但是无济于事，她整晚都在不停地尖叫。
3.He was persuaded to calm down at last.经过几番劝说，他的怒气才算是消歇了。