难懂

The reasons of recognition disability include unproper study methods,short of fixed knowledge points,abstract and difficult chemistry knoledge,as well as the specific features of the chemistry subject.

引起认知障碍的原因分为：学习方式不当、缺乏相应的固定点知识、化学知识抽象难懂、以及化学学科自身的特点四种。

When you read a book, veri often you find it hard to understand.

读一本书的时候，经常会觉得很难懂。

His speech was deep with allegories.

他的演讲因寓言故事而晦涩难懂。

At each point along the way, the nations where men of enterprise were most free to pursue wealth and/or knowledge slowly pulled ahead of those autocracies and theocracies that stifled individual ambitions.

不如将&血腥&后移，修饰&扩张&，不悖原意---译者）在历史发展进程中，凡其国民锐意进取者有最大自由追求财富和知识的国家，比起那些压制个人雄心壮志的专制统治及神权统治的国家，总能缓慢地却不断地积跬步之先。（这句不难懂，但不好译。如何译出at each point， slowly pulled ahead？这里采用&积跬步之先&模糊地译出---译者

Thus the thesis of this essay is the Confucian ideas in The Cantos.

虽然涉及各题材的程度深浅不一，相当部分的诗句晦涩难懂，但这并不违背庞德创作这部海纳百川，创新纪元诗作的初衷。

As a journalist, Henri Cattier Bresson felt an intense need to communicate what he thought and felt about what he saw, and while his pictures often were subtle they were rarely obscure.

作为一个记者，卡蒂埃。布勒松感到对于交流的强烈需要，他认为应该记录下他感觉并看见的，他的照片经常是刻画细微，很少含糊难懂。

There is a certain amount of leniency involved when dealing with Westerners. So you won't be chastised.

对西方人来说，这里有很多比较难懂的规则，而且必须了解，不然将会受到惩罚。

By correlating the markings around the world, historians have been able to understand the difficult code.

通过对比世界各地的记号，历史学家已经能够解读这些难懂的密码了。

The history time of majority of mandatory teaching material is curter and difficult, arouse the study interest of our student hard.

历史》必修教材多数时候比较生硬难懂，难以激发我们学生的学习喜好。

He embarrasses discussion of the simplest subject by use of a difficult technical vocabulary .

他用难懂的专门字眼使最简单的题目的讨论复杂化了。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。