alert是什么意思

alert

英 [?'l??t] 美 [?'l?t]

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。

alert: alert: [17] Alert comes, via French, from an Italian phrase all’ erta ‘on the look-out’, or literally ‘at 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.

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)生任何報復行動。

2. They want to be on the alert for similar buying opportunities.: 他們希望隨時掌握有關類似購買機會的信息。

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。