alert [形容詞] 警惕的;機敏的; [動詞] 向...報警;使警覺; [名詞] 警戒,警報;警戒狀態
alert
[ə'lə:t]
adj.警覺的, 靈敏的
vt.使意識到, 警惕
n.警戒, 警報
例句與用法：
Troops are on the alert against any possible aggression.
軍隊戒備著可能的來犯。
The alert leopard went up to a deer quietly.
警覺的豹子靜悄悄地走近一隻鹿。
Although he's over eighty his mind is still remarkably alert.
他雖已年過八十，但頭腦仍然十分機敏。
An alert listener will have noticed the error.
耳朵尖的人能聽出這個錯。
詞形變化：
動詞過去式: alerted | 動詞過去分詞: alerted | 動詞現在分詞: alerting | 動詞第三人稱單數: alerts |
英文解釋:
名詞 alert:
condition of heightened watchfulness or preparation for action
同義詞：qui vive
a warning serves to make you more alert to danger
同義詞：alerting
an automatic signal (usually a sound) warning of danger
同義詞：alarm, warning signal, alarum
動詞 alert:
warn or arouse to a sense of danger or call to a state of preparedness
同義詞：alarm
形容詞 alert:
very attentive or observant
mentally responsive
not unconscious; especially having become conscious
同義詞：awake
(usually followed by `to') showing acute awareness; mentally perceptive
同義詞
watchful | attentive | signal | warn | alarm | prepared | lively | aware | on your toes | on guard | ready | nimble | forewarn | notify | tell | prompt | inform | warning | siren | red alert | awake | vigilant | quick | alive | bright | brilliant | cautious | smart | fresh | job | circumspect | caution | clever | sharp | threaten | agile | on the job | on | the | torpid | wide awake | on one's toes | dull | slow | one's | wide | toes | intelligent | snappy | qui vive | rattling | merry | warning signal | alerting | spanking | brisk | zippy | alarum |
反義詞
unalert |
以上來源於大辭典
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