1560s, from Middle French vigilance (16c.), from Latin vigilantia "wakefulness, watchfulness, attention," from vigil "watchful, awake" (see vigil). Related: Vigilancy (1530s).
双语例句
1. Drugs are a problem that requires constant vigilance.
需要对毒品问题长期保持警惕。
来自柯林斯例句
2. The birds cannot afford to relax their vigilance against predators.
鸟儿不敢放松对捕食者的警戒.
来自《简明英汉词典》
3. Never relax your vigilance while you live in peace.
你们要居安思危.
来自《简明英汉词典》
4. Constant vigilance is necessary in order to avoid accidents.
