| 单词 | 要格外警惕 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔vigilant〕Following the bomb scare at the airport, the staff have been warned to be extra vigilant.机场的炸弹恐吓事件之后，全体员工都被告诫要格外警惕。剑桥高阶Following the bomb scare at the airport, the staff have been warned to be extra vigilant.受了机场爆炸事件惊吓之后，员工们接到警告，要格外警惕。剑桥国际 |
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