keep one's hair on

例句：

1. 1.During the crisis, it's important to keep one's hair on and remain focused.
   在危机时刻，保持冷静和专注是很重要的。
2. 2. The CEO kept his hair on during the board meeting, demonstrating strong leadership.
   首席执行官在董事会会议上保持冷静，展现了强大的领导力。
3. 3. After the accident, she kept her hair on and helped her friends through the difficult times.
   事故发生后，她保持冷静，并帮助朋友们度过了艰难时期。