all clear

柯林斯詞典

1. N-SING The all clear is a signal that a dangerous situation, for example, an air raid, has ended. 危險解除的信號['the' N]
The all clear was sounded about 10 minutes after the alert was given. 警報響起十分鐘后，危險解除的信號就響了。
2. N-SING If someone in authority gives you the all clear, they give you permission to continue with a plan or activity, usually after a problem has been sorted out. 許可; 批準(zhǔn)['the' N]
I was given the all clear by the doctor to resume playing. 醫(yī)生批準(zhǔn)我繼續(xù)參加比賽了。