沉住氣
Keep control of oneself.

【發音】chén zhù qì

【釋義】（在異常情況下）保持頭腦冷靜，心境平穩。
?????????????Keep calm in mind or be steady in abnormal situation.

【例1】他一看到賬單的數字幾乎沉不住氣了。
???????????He almost lost control of himself when he saw the size of the bill.

【例2】別驚慌失措的－－沉住氣。
?????????? Don't lose your head! Keep calm!