vigilance
	英 ['vɪdʒɪl(ə)ns]
美 ['vɪdʒələns]
	    
		英文词源
	
	- vigilance (n.)
 - 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. 
  - 为了避免意外事故,必须经常保持警惕.
  来自《现代汉英综合大词典》
 
- 5. We shouldn't relax our vigilance at any time. 
  - 任何时候我们都不应该放松警惕.
  来自《简明英汉词典》