查询词典 be on guard against

The citizens were warned to be on guard against a sudden night attack.

市民们得到通知，要提防夜间的突然袭击。

That is the first instance of my human prudence, that I let myself be deceived in order not to be on guard against deceivers.

这是我关於人类智慧的第一个立场，那就是我让自己受骗於人，只为了不想处处提防著那些欺骗者。

You young people should be on guard against foolhardiness.

应该注意力戒这种蛮干作风。

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

要提防那些嫉妒你的成功的人。不适合

We should be on guard against this.

我们要警惕。

Indeed that has to be a major risk, and investors need to be on guard against it.

这种情况确实是一个重大风险，是投资者需要加以防范的。

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

要提防那些嫉妒你的成功的人。

And I will be on guard against two evils: hastiness and indecision.

而且我将防范两个邪恶：草率、优柔寡断。

In a society of such high moral practice, what need is there for people to be on guard against others?

在社会如此高的道德实践，有啥需要的是在那里的人要对防范别人呢？

Either they do this out of pusillanimity and a natural defect of spirit; then you must make use especially of those who are of good counsel, because in prosperity they bring you honor and in adversity you do not have to fear them; but, when by art and for an ambitious cause, they are not obligated, it is a sign that they are thinking more for themselves than for you; and the prince must be on guard against them, and fear them as if they were open enemies, because in adversity they will always help ruin him.

有的人 生性优柔寡断，天生就缺乏热情。君主尤其要启用那些能忠言直谏的人，因为他们会在繁荣期给君主带来荣誉，而君主在逆境中时也不必担心他们拆台。但如果大人物工于机巧，野心勃勃，而没有感恩之心，那就是一种征兆，证明他们更多的是考虑自身的利益，而很少为君主着想。对这样的人必须像对待公开的敌人一样提高警惕，因为他们在君主遭殃时往往会落井下石。一个人在民众的拥戴下当上了一国之君，就应该善待民众——这是轻而易举之—事，因为民众对他的要求只是不受压迫而已。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。