alert
/əˈlɜːt/
adj. / v.
一句话记住
警觉的;警惕的;提醒;向……发出警报
释义与例句
adj.
警觉的;警惕的
quick to notice possible danger or problems and ready to act
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Drivers should stay alert when travelling on icy roads.
驾驶员在结冰道路上行驶时应保持警觉。
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An alert security guard noticed the open window.
一名警觉的保安注意到了那扇开着的窗户。
展开其余 1 条例句
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The dog remained alert to every movement outside the gate.
那只狗始终警惕着门外的每一点动静。
v.
提醒;向……发出警报
to warn somebody about a danger, problem, or important situation
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Police alerted residents to the risk of flooding.
警方提醒居民注意洪水风险。
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The doctor alerted us to the possible side effects of the drug.
医生提醒我们注意这种药可能产生的副作用。
展开其余 1 条例句
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A neighbour smelled smoke and alerted the fire brigade.
一位邻居闻到烟味,立即通知了消防队。
词源与构词
记忆钩子
作动词常用 alert somebody to something;作形容词常用 stay alert 或 be alert to。
词族与关联词
词族(同一词根派生出的不同词性或形式)
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alertness 警觉;机敏alert 对应的名词,指注意周围情况并迅速反应的状态。
同义词
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watchful 警惕的;留意的watchful 强调仔细观察、提防;alert 除留意外,还强调头脑清醒并随时准备作出反应。The hikers remained watchful as they crossed the steep slope. 徒步者越过陡坡时一直保持警惕。
易混词(形近或义近,注意区别)
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alarm 使惊恐;使担心alert 是提醒某人注意情况,不一定引起恐慌;alarm 强调使人惊恐或不安。The sudden rise in cases alarmed health officials. 病例突然增加令卫生官员担忧。
常见搭配
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stay alert 保持警觉Stay alert for cyclists when opening your car door. 打开车门时要留意骑自行车的人。
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alert somebody to something 提醒某人注意某事The report alerted ministers to weaknesses in coastal defences. 这份报告提醒部长们注意海防设施的薄弱环节。
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on the alert 处于警戒状态Border guards remained on the alert throughout the night. 边防警卫整夜保持警戒。