| 单词 | vigilant |
| 例句 | vigilant adjective •we've become more vigilant since the neighbors were robbed:watchful, observant, attentive, alert, eagle-eyed, hawk-eyed, on the lookout, on one's toes, on the qui vive | wide awake, wakeful, unwinking, on one's guard, cautious, wary, circumspect, heedful, mindful | informal beady-eyed. ANT inattentive. |
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