extra precaution

额外的预防措施：采取的超出正常或基本预防措施的额外措施
常用释义
额外的预防措施：采取的超出正常或基本预防措施的额外措施，以确保安全或避免风险。

例句

Watch out for an attack by the enemy bombers and take extra precaution against anti-aircraft fire.

小心敌人轰炸机的攻击并额外警惕防空火力。

That's coastal areas of Hawaii and the western U. S. . Hawaii still chose to issue an emergency evacuation as an extra precaution .

这是夏威夷和美国西部地区的海岸线。夏威夷为防患于未然仍通知紧急疏散。

But be it extra precaution, style or a mental crutch, Obama has shown in the past that he needs the teleprompter .

就算他这是谨慎之举、个人风格或者心理安慰吧，奥巴马在过去一再表现出自己对于提词器的依赖。

攻击时进行额外警惕是必要的！

Then you might want to take extra precaution at keeping hackers from reaching into your cookie jar.

那你可要当心黑客把手伸进你的曲奇罐（cookiejar）。