| 单词 | alert |
| 释义 | alert[ə'lə:t]a. 警觉的, 灵敏的, 留心的n. 警报vt. 使警觉, 通知, 使意识到【法】 警报, 警戒状态, 警戒期间相关词组:to alert sb to the danger of...to alert sb to the fact that...on the alert alert a.lert AHD: […-lûrt“] D.J. [*6lT8t]K.K. [*6lPt]adj.（形容词）1. Vigilantly attentive; watchful:警觉的，警惕的；注意的：alert to danger; an alert bank guard.See Synonyms at &b{aware} 警惕危险；警觉的银行保安人员参见 aware2. Mentally responsive and perceptive; quick.思维敏捷的：思维反应迅速且感觉灵敏的；快速敏捷的3. Brisk or lively in action:活泼的：行动轻快或有活力的：the bird's alert hopping from branch to branch.小鸟在树枝间欢快地跳跃n.（名词）1. A signal that warns of attack or danger:警报：警告进攻或危险的信号：Sirens sounded the alert for an air raid.See Synonyms at &b{alarm} 空袭警报的警笛响起参见 alarm2. A condition or period of heightened watchfulness or preparation for action:警戒状态：高度警惕或准备随时行动的状态或阶段：Nuclear-armed bombers were put on alert during the crisis.核武装轰炸机在危机期间负责警戒v.tr.（及物动词） a.lert.ed,a.lert.ing,a.lerts To notify of approaching danger or action; warn:向…报警：对临近的危险或行动发出通知；警告：a flashing red light that alerted motorists to trouble ahead.闪烁的红灯警告摩托车手前面有危险习惯用语:on the alert Watchful and prepared for danger, emergency, or opportunity:警戒着，防备着：注意着且防备着危险、意外或机会：bird watchers on the alert for a rare species.看守者人密切注意稀有鸟类语源:1. French alerte 法语 alerte 2. from Italian all' erta [on the lookout] 源自 意大利语 all' erta [密切注意] 3. alla [to the, on the] from Latin ad illam [to that] ad- [ad-] illam [accusative of] illa [that] * see al- 1alla [对…，在…之上] 源自 拉丁语 ad illam [对那个] ad- [前缀，表“朝向”] illam [] illa的宾格 [那] *参见 al- 14. erta [lookout] [from past participle of] ergere [to raise] from Latin ¶rigere * see erect erta [注意] [] 源自ergere的过去分词 [举起] 源自 拉丁语 ¶rigere *参见 erect |
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