| 释义 |
alertBrE /əˈlɜːt/NAmE /əˈlɜːrt/ adjectiveable to think quickly; quick to notice things 警觉的；警惕的；戒备的◆Suddenly he found himself awake and fully alert. 突然他发觉自己醒了过来，而且高度警觉。◆Two alert scientists spotted the mistake. 两个警觉的科学家发现了这个错误。~ to sthaware of sth, especially a problem or danger 意识到，注意到（问题或危险）◆We must be alert to the possibility of danger. 我们必须认识到危险发生的可能性。▸ alert·ly BrE /əˈlɜːtli/NAmE /əˈlɜːrtli/ adverb▸ alert·ness BrE /əˈlɜːtnəs/NAmE /əˈlɜːrtnəs/ noun [U] alertBrE /əˈlɜːt/NAmE /əˈlɜːrt/ verbpresent simple - I / you / we / they alert BrE /əˈlɜːt/ NAmE /əˈlɜːrt/present simple - he / she / it alerts BrE /əˈlɜːts/ NAmE /əˈlɜːrts/past simple alerted BrE /əˈlɜːtɪd/ NAmE /əˈlɜːrtɪd/past participle alerted BrE /əˈlɜːtɪd/ NAmE /əˈlɜːrtɪd/ -ing form alerting BrE /əˈlɜːtɪŋ/ NAmE /əˈlɜːrtɪŋ/ [often passive] ~ sb (to do sth) | ~ sb (that)…to warn sb about a dangerous or urgent situation 向…报警；使警觉；使警惕；使戒备◆Neighbours quickly alerted the emergency services. 邻居很快向应急服务机构报了警。◆Alerted by a noise downstairs, he sat up and turned on the light. 楼下的响声使他警觉，他坐起来打开灯。~ sb to sthto make sb aware of sth 使意识到；使认识到◆They had been alerted to the possibility of further price rises. 他们已意识到价格可能继续上涨。 alertBrE /əˈlɜːt/NAmE /əˈlɜːrt/ noun [sing., U] a situation in which people are watching for danger and ready to deal with it 警戒；戒备；警惕◆Police are warning the public to be on the alert for suspicious packages. 警方警告公众要警惕可疑包裹。◆More than 5 000 troops have been placed on (full) alert.5 000 多名士兵已处于（全面）戒备状态。 [C] a warning of danger or of a problem 警报◆a bomb/fire alert 炸弹/火警警报 alert, assassinate, attack, campaign, execute, extremist, hijack, hostage, kidnap, terrorism ➡ see also red alert |