must guard against

You must guard against catching a cold.

你必须小心以防感冒.

In these circumstances he must guard against pessimism.

在这里,应注意防止悲观情绪的发生.

We must guard against or overcome the tendency to be formulistic and abstract, which produces monotonous, stiff, mechanical and stereotyped works.

要防止和克服单调刻板、机械划一的公式化概念化倾向。

We must guard against closet racists.

我们必须警惕隐蔽的种族主义者.

You must guard against errors.

你必须留意以免出错.

In conclusion, the writer warned his young readers, " You must guard against falling in love.

最后作者教训似地劝告青年: “ 应该反对恋爱,不可轻惹情丝. ”

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.

You must be on your guard against the dog.

你一定要防备那只狗.

You must guard against those who fawn upon you and bow obsequiously before you!

对阿谀奉承、点头哈腰的人要格外警惕!

We must guard against international economic risks.

注重防范国际经济风险.

When growing vegetables, one must guard against cabbage aphids.

菜农在种植蔬菜时一定要注意防治菜蚜.

You must guard against passing on disease to your family.

注意别把病传给自己家里的人.

We must guard against accidents.

我们必须谨防事故.

We must guard against such a situation.

我们必须警惕这样的局面.

You must guard against those who fawn upon you and bow obsequiously before you! I cannot be your friend and your flatterer too.

对阿谀奉承、点头哈腰的人要格外警惕！我不能同时是你的朋友又是你的阿谀奉承者。

In the councils of government, we must guard against the acquisition of unwarranted influence, whether sought or unsought, by the military-industrial complex.

在政府层面，我们必须警惕军事-产业综合体自觉或不自觉带来的影响。

When growing cabbage, we must guard against plutellid moth.

种白菜一定要注意预防菜蛾.

The doctor must always guard against passing on disease to his family.

医生必须时常提防把疾病传染给他的家人.

We must guard against disease.

我们必须预防疾病.