exercise vigilance

• 提高警惕； 防范； 戒备； 警戒

exercise vigilance的用法和样例：

例句

1. The price of liberty is eternal vigilance.
   自由的代价是永久提高警惕。
2. Eg.We must step up our vigilance.
   我们一定要提高警惕。
3. Sniping may be a problem and senior officers must exercise due care when travelling about their areas.
   放冷枪进行暗算可能是个大问题，所以高级军官路经他们地区时必须小心防范。
4. I slid back the panelled sides, got in with my light, pulled them together again, and felt secure against the vigilance of Heathcliff, and everyone else.
   我推开嵌板的门，拿着蜡烛进去，把嵌板门又合上，觉得安安稳稳，躲开了希刺克厉夫以及其他人的戒备。
5. Police's vigilance was eventually rewarded.
   警方时时警戒终有所获。
6. Eternal vigilance is the price of liberty.
   自由的代价乃是永恒的警戒。