on guard against的意思|示意

The police warned people to be on guard against burglary during the festival.

警察提醒人们假日里要注意提防盗窃。

To be on guard against theft, the school has issued regulations specifying the duties of the door keepers.

为了防止盗窃，学校已经制定规章制度，明确规定了大楼看管员的职责。

In the absence of a common goal or common enemy, they prefer to be on guard against each other.

在缺乏共同目标或共同敌人的情况下，他们宁愿相互防备。

Be on guard against those who try to lie themselves into our confidence.

警惕那些用谎言来骗取我们信任的人。

We must be on guard against hidden enemies.

我们必须警惕暗藏的敌人。

The coastal regions should be on guard against possible disasters that may be brought about by the typhoon.

沿海地区应注意预防台风可能带来的灾害。