on guard against

He is constantly on guard against any threat of humiliation.

他时刻提防着任何有辱尊严之事。

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 should be on guard against obsequiousness under the name of popularization.

我们必须警惕在平民化名义下的媚俗化趋势.

You be on guard against bad company.

你应该提防交错朋友.

Be on guard against those who are jealous of your success.

要提防那些嫉妒你的成功的人.

And right off I was on guard against Mencken's books.

我马上就对门肯的书警觉起来了.

Everyone must be on guard against scams , but seniors can sometimes be vulnerable to fraud.

每个人都应该对诈骗提高警觉 ﹐ 但是老年人有时候特别容易上当受骗.

When we go shopping, we should be on guard against pickpockets.

当购物的时候, 我们应该提防扒手.

We should be on guard against the enemy's invasion.

我们要防范敌人的入侵.

The rancher must always be on guard against the dangers that nature can create.

牧场主必须时刻防备可能发生的自然灾害.

We must be on guard against hidden enemies.

我们必须警惕暗藏的敌人.

Be on guard against him yourself, for he vigorously opposed our teaching.

提后4:15你也要防备他.因为他极力敌挡了我们的话.