a cool head 沉著的腦筋(the ability to stay calm and think clearly in a difficult situation)
例句:
These are high pressure situations and you have to keep a cool head.
在高壓力的情形下你必需堅持沉著的腦筋。
Professional trustees are trained to handle hostility and usually manage to keep a cool head.
專業的受托人受過練習來處置敵意,他們平日都能堅持沉著的腦筋。