冷靜點，淡定點，別發(fā)脾氣

We use this expression to tell someone to not be angry or upset, which we think is unnecessary.

我們用這個表達告訴某人不要生氣或難過，因為我們認為這沒必要。

Keep your hair on, Mary. I wasn't saying that you should do anything dangerous.

冷靜點，瑪麗。我沒有說要你去做危險的事。

Keep your hair on, Mum. You can hardly see the damage.

冷靜點，媽媽。這東西上幾乎看不出有什么損壞。