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to keep a lookout
01
to monitor a particular area, situation, or person in order to be aware of any developments, changes, or potential dangers
Collocation
例子
During the camping trip, someone needed to keep a lookout for wild animals.
The lifeguard kept a lookout for swimmers in distress.
The security guard kept a lookout for suspicious activity on the surveillance cameras.
In a game of hide and seek, one child is designated to keep a lookout.
He asked his friend to keep a lookout while he quickly ran into the store.
