keep a weather eye on
成語所屬單字weather
keep a weather eye on — 慣用語
1. to watch a person or situation carefully so that you can act quickly if a proble
1.慣用語
釋義
密切留意；提防
to watch a person or situation carefully so that you can act quickly if a problem starts.
例句
The lifeguard kept a weather eye on the children paddling near the rocks.