| 词汇 | vigilant |
| 释义 | vig·i·lant adj watching carefully and paying attention, so that you notice anything dangerous or illegal 警惕的，警觉的: People should remain vigilant at all times and report any suspicious packages to the police. 民众应当时刻保持警惕，如发现可疑包裹应向警方报告。 |
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