He denied that he'd failed to keep a proper lookout that night.他否认当晚守望不力。

Keep a lookout for a nasty little organization calling itself Defence Through Strength.要警惕一个自称“实力防卫”的可恶组织。

Nature lovers will be on the lookout for eagles, cormorants, and the occasional whale.自然爱好者会留意鹰、鸬鹚和偶尔出现的鲸。

He was always on the lookout for good new music.他总是留心新的好音乐。

She's always on the look-out for bargains.她总是留意着便宜货。