watchful
adj. 注意的；警惕的；<古>不眠的；醒的
副词：watchfully 名词：watchfulness
近义词：alert，vigilant，awake，alarmed，careful，cautious，circumspect，observant，attentive，onthealert，wide-awake，sleepless，insomniac，incautious，careless，
英英释义
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"
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。