on the lookout for
释义
寻找或搜寻（某物或某人）
例句
1·The public should be on the lookout for symptoms of the disease.
公众应当留心这种疾病的症状。
《牛津词典》
2·Be on the lookout for someone whose color you admire.
注意你羡慕的某些人的发色。
3·Being on the lookout for signs of depression in a family member.
注意家庭成员抑郁的迹象。
同义词
寻找；注意；警戒
in search foron the trail
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