not turn a hair
成語所屬單字hair
not turn a hair — 慣用語
1. To show no reaction of surprise or shock when something unexpected happens.
1.慣用語
釋義
面不改色
To show no reaction of surprise or shock when something unexpected happens.
例句
When the car crashed, the driver did not turn a hair.
Did the teacher turn a hair when the student shouted out?