Definition: to watch carefully for someone or something Level: C2
仔细观察任何不寻常的事情。
___Keep ___your ___eyes ___open ___for anything unusual.
我们必须密切关注任何过度消费的迹象。
We must ___keep our ___eyes ___open ___for any excessive consumption.
警察被告知要密切关注可疑活动。
Police officers are told to ___keep their ___eyes ___open ___for suspicious activity.
