The hunter has an eagle eye.

这个猎人目光锐利。

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She kept an eagle eye out for guests with empty cups or plates that needed refilling.

她密切关注着那些需要续杯或续盘的客人。

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John said that his daughters could have a party on Saturday night, but warned them that he would be keeping an eagle eye on the proceedings.

约翰说，他的女儿们可以在星期六晚上举行一个晚会，但警告他们说。他会密切注意他们的各种活动。

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Develop an eagle eye to spot flattering items.

WSJ: Ask Teri: Dresses for Older Figures

The observers must represent an eagle-eye corps dedicated to protecting voters' rights while remaining virtually invisible and avoiding actions that could be viewed as heavy-handed or intimidating.

CNN: Federal observers and monitors heading to polls

At both the manufacturer level and in retailing, success belongs to those businesses which curate with an intense eagle-eye that puts customer interests firmly in first place.

FORBES: Laser-Age Brand Curating