calm down

US /kɑːm daʊn/
UK /kɑːm daʊn/
"calm down" picture
1.

冷静下来, 使平静

to become quiet and relaxed after being angry, excited, or upset, or to make someone do this

:
Please, just calm down and tell me what happened.
请你冷静下来,告诉我发生了什么。
She took a deep breath to calm down.
她深吸一口气,让自己平静下来