alert
?? 發(fā)布時間：2026-06-30 10:40:54
英 [?'l??t]
美[?'l?t]
- vt. 警告；使警覺，使意識到
- adj. 警惕的，警覺的；留心的
- n. 警戒，警惕；警報
- n. (Alert)人名；(西)阿萊爾特
CET4TEM4GRE考研TOEFLCET6中頻詞核心詞匯
詞態(tài)變化
復(fù)數(shù):?alerts;第三人稱單數(shù):?alerts;過去式:?alerted;過去分詞:?alerted;現(xiàn)在分詞:?alerting;名詞:?alertness;
中文詞源
alert 警醒的
來自意大利語all’erta. -erta, 同 erect，豎直。即全部到城墻上守城。
英文詞源
- alert
- alert: [17] Alert comes, via French, from an Italian phrase all’ erta ‘on the look-out’, or literally ‘a(chǎn)t the (alla) watch-tower (erta)’. Erta was short for torre erta, literally ‘high tower’, in which the adjective erta ‘high’ came ultimately from Latin ērectus, the past participle of ērigere ‘raise’.
=> erect - alert (adv.)
- "on the watch," 1590s, from French alerte "vigilant" (17c.), from phrase à l'erte "on the watch," from Italian all'erta "to the height," from erta "lookout, high tower," noun use of fem. of erto, past participle of ergere "raise up," from Latin erigere "raise" (see erect). The adjective is attested from 1610s, the noun from 1803, and the verb from 1868. Related: Alerted; alerting.
雙語例句
- 1. The armed forces were on high alert to guard against any retaliation.
- 武裝部隊保持高度戒備，以防發(fā)生任何報復(fù)行動。
來自柯林斯例句
- 2. They want to be on the alert for similar buying opportunities.
- 他們希望隨時掌握有關(guān)類似購買機會的信息。
來自柯林斯例句
- 3. The bank is alert to the danger.
- 銀行充分意識到了危險。
來自柯林斯例句
- 4. All the Plymouth hospitals are on red alert.
- 普利茅斯所有的醫(yī)院都處于緊急狀態(tài)之中。
來自柯林斯例句
- 5. Soldiers and police have been put on alert.
- 士兵和警方都已進(jìn)入警戒狀態(tài)。
來自柯林斯例句