| 单词 | alert |
| 释义 | alert¹ 1.(watchful)+ person警觉的；警惕的；留神的 He had been spotted by an alert neighbour.他已经被一个警觉的邻居发现了。 We must stay alert.我们必须保持警惕。 to be alert to sth + danger, opportunity注意到…；意识到… They were both alert to the dangers.他们两个都注意到了危险情况。 2.(nimble, lively)+ person敏捷的；活泼的 He was arrested by a couple of alert cops.他被两个身手敏捷的警察逮捕了。 alert²1.(alarm)(尤指空袭的)警报 One of the security guards gave the alert.其中的一个保安发出了警报。 Officials raised the alert over a potential terrorist attack.官员们对潜在的恐怖袭击发出了警报。 a security alert安全警报 to give the alert给予警告(或提醒) 2.(period)警报期间 idiom alert³ ◆on alert处于戒备状态 Soldiers and police have been put on alert.士兵和警察已处于戒备状态。 ◆on red alert处于最高戒备状态 Armed officers swarmed to the scene as paramedics waited on red alert.大批武装警察前往现场, 护理人员随时待命。 ◆on the alert保持警惕 Prepare for action and be on the alert.准备行动, 保持警惕。 to be on the alert for sth (looking for)+ opportunity留心某事物；注意某事物 We are on the alert for new opportunities.我们留意着新的机会。 (watching out for)+ danger, attack防备某事物；警惕某事物 They want to be on the alert for similar buying opportunities.他们希望及时关注到类似的购买机会。 1.(warn to prepare for action)+ person向…报警；通知…待命；向…示意 He pressed the horn to alert the guards.他按下喇叭, 向卫兵示意。 A passerby alerted the police.一个过路人报了警。 The fire brigade was alerted at 8.13pm.消防队于晚8点13分接到报警。 2.(warn of danger)+ person向…发出警报；使警惕；使注意 Greek officials admitted they were alerted before the attacks took place.希腊官员承认在袭击发生前他们接到了警报。 A detector was able to alert the family of the danger.探测器能够向家里人发出危险警报。 to alert sb to sth使某人注意到某事物 He wanted to alert people to the activities of the group.他想提醒人们小心这个团体的活动。 to alert sb to the dangers of sthorto alert sb to the risks of sth使某人认识到某事物的危险 posters alerting people to the risks of smoking使人们意识到吸烟的危害的海报 |
| 随便看 |
|
英汉双解词典包含368430条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。