jǐng tì警惕vigilant; alert; to be on the alertHSK 7+ · Frequency 3.9Meaningsvigilant; on guard; alertto be on the alertExample sentences我们要时刻警惕网络诈骗。医生提醒公众警惕流感病毒的变异。他对陌生人抱有很高的警惕心。