平常心用英语怎么说

"Keep a cool head" or "Keep your head" is a common English expression used to mean staying calm and collected, even in difficult or stressful situations. This phrase likely originated from the idea of literally keeping one's head cool by not allowing emotions to get the better of you.

例句：

"In the face of adversity, it's important to keep your head and stay focused."（面对逆境，重要的是保持冷静并专注。）

"When negotiating with clients, always keep a cool head and try to find a compromise."（在与客户谈判时，一定要保持冷静，并尝试找到折中方案。）