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更新日期:2026-08-14
be on the ˈlookout (for sb/sth)|keep a ˈlookout (for sb/sth)(informal)to watch carefully for sb/sth in order to avoid danger, etc. or in order to find sth you want注意;警戒;留心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。