watchful

adj.注意的；警惕的；<古>不眠的；醒的副词：watchfully名词：watchfulness

watchful

Adjective

engaged in or accustomed to close observation;

"caught by a couple of alert cops"
"alert enough to spot the opportunity when it came"
"constantly alert and vigilant, like a sentinel on duty"

experiencing or accompanied by sleeplessness;

"insomniac old people"
"insomniac nights"
"lay sleepless all night"
"twenty watchful, weary, tedious nights"

watchful例句

用作形容词(adj.)

You must be watchful of your health.
你必须注意你的健康。

They were not very watchful of the traffic lights.
他们并不很注意红绿灯。

We should be watchful of computer viruses.
我们应该警惕计算机病毒。

The guard should be watchful during the night.
警卫在黑夜里也应该警醒。

watchful近义词

alert vigilant awake alarmed careful cautious circumspect observant attentive on the alert wide-awake sleepless insomniac incautious careless

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