keep somebody on their toes
成語所屬單字toe
keep somebody on their toes — 慣用語
1. To make someone stay alert and ready for unexpected situations.
1.慣用語
釋義
讓某人保持警覺
To make someone stay alert and ready for unexpected situations.
例句
The new manager's surprise visits keep the team on their toes.
A demanding teacher keeps students on their toes all semester.