vigilance
n. 警戒；警惕；【医】失眠症
近义词：deliberation，chariness，watchfulness，alertness，attentiveness，care，observance，caution，awareness，weathereye，wakefulness，
英英释义
Noun
- the process of paying close and continuous attention;
"wakefulness, watchfulness, and bellicosity make a good hunter" "vigilance is especially susceptible to fatigue"
- vigilant attentiveness;
"he keeps a weather eye open for trouble"
例句
用作名词(n.)
- In spite of vigilance a polar bear escaped from the zoo.尽管警戒很严，北极熊还是逃出了动物园。
- Police's vigilance was eventually rewarded.警方时时警戒终有所获。
- We must maintain keen vigilance at all times.任何时候我们都要保持高度的警惕。
- You cannot afford to relax your vigilance for a moment.警惕性是万万不可放松的。