vigilant /ˈvɪʤələnt/ adjective Learner's definition of VIGILANT
[more vigilant; most vigilant]
: carefully noticing problems or signs of danger警觉的;警惕的;警戒的 -
When traveling through the city, tourists should be extra vigilant.在穿行这个城市的时候游客要多加小心。
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They were vigilant about protecting their children.他们保护孩子的意识很强。
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We remain vigilant against theft.我们对偷盗保持警惕。
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a vigilant tourist/parent警惕性强的游客/家长
— vigilance
/ˈvɪʤələns/ noun [noncount]