难理解的

Beginning C and C++ programmers often have difficulties understanding order of evaluation and the rules of precedence and associativity.

初学 C 和 C++的程序员一般很难理解求值顺序、优先级和结合性规则。

I found it hard to appreciate the choky singer's song.

我发现这个**歌手的歌很难理解

Engineering thermodynamics is a strongly conceptive curriculum,some of concepts are very abstract and difficult for students to understand.

工程热力学是一门概念性很强的课程，有些概念非常抽象，学生较难理解。

Look, I know my confusion must be hard for you to understand.

听着，我知道我的迷茫对你来说一定很难理解。

While trying to get a grasp of the septile aspect, I went back to John Addey (1920 1982), a key voice in bringing Pythagorean understanding of numbers into modern astrology. He wrote Harmonics in Astrology in 1976; it is now back in print after many years. He writes that the number seven (and the 7th harmonic)"is a difficult number to pin down" and "somewhat elusive to interpret."

为了试图给7分相位一个浅显的解释，我找到了历史上的一位占星家，名叫 John Addey ，将毕达哥拉斯对数字的理解带进了现代占星学，他1976年出版了一本《占星中的数字和谐》，书中有关数字7和7分相位，他写道"它是一个很难确定，很难下结论的数字"并且"不太容易解释和捉摸"。

While trying to get a grasp of the septile aspect, I went back to John Addey (1920 1982), a key voice in bringing Pythagorean understanding of numbers into modern astrology. He wrote Harmonics in Astrology in 1976; it is now back in print after many years. He writes that the number seven (and the 7th harmonic)"is a difficult number to pin down" and "somewhat elusive to interpret."

为了试图给7分相位一个浅显的解释，我找到了历史上的一位占星家，名叫 John Addey ，将毕达哥拉斯对数字的理解带进了现代占星学，他1976年出版了一本《占星中的数字和谐》，书中有关数字7和7分相位，他写道&它是一个很难确定，很难下结论的数字&并且&不太容易解释和捉摸&。

It may be difficult to understand the cash advance process, but it is not the process of getting the money that is the difficult part to understand.

可能很难理解预借现金的过程，但它并不是的过程中获得的金钱，这是困难的部分理解。

It is hard, though, to see a parent's evolutionary interest in controlling its offspring's lifespan by making some somas more disposable than others—nor why evolution would favour longevity in the children of older parents.

然而，很难理解父母的进化取向是通过制造一些比其它体细胞更脆弱的体细胞来控制后代的寿命，同样也不能理解为什么进化中的长寿会钟情于大龄父母的孩子。

The author discovered in the exploration, firstly, in Zhu Xi"s reading view both pays great attention the reader to text"s assurance, causes the reader as not to be separated from the text so as to do surpasses the text threshold the understanding, and pays great attention the reader individual experiences seepage to the influence of the reading result which causes the reader not only book not on only, displays the reader individuality fully; Next, Zhu Xi's opinions pays attention to the familiarity with fine thinking, thought that is familiar with fine thinking is the understanding foundation, thinking in reading, reading in thinking, can have a feeling to become aware, also pays great attention to fulfilling experience, thought that the reader wants to experience attentively at the same time, pursues internal conjunction of the reader's and the author's mind, pursues a kind of communication of mind, on the other hand we must use the practice to experience, and to pursue the reader's reading result and the life exchange, only then such reading result can penetrate thoroughly; Finally, Zhu Xi's view also pays great attention the knowledge that soaks thoroughly the penetration. It is thought that the reader must proceed in an orderly way, neither anxiously nor slow, work carefully and make steady progress from the easy to the difficult, and using analogy to make the knowledge interpenetration, learn with a lively mind, and increase reader's ability for the next reading .

在探索中笔者发现，首先，朱熹的阅读观中既注重读者对文本本身的把握，使读者不至于脱离文本做超出文本阈限的理解，又注重读者个性经验的渗透对阅读结果的影响，使读者不唯书不唯上，充分发挥读者个性；其次，朱熹阅读观还注重熟读精思的重要性，认为熟读精思是理解的基础，在读中思，于思中读，才能有所感悟，又注重体验践行，认为读者一方面要用心体验，追求读者与作者心灵内部的契合，追求一种心灵的对话，另一方面要用实践去体验，追求读者阅读结果与生活之间的交流融通，只有这样的阅读结果才能深入透彻；最后，朱熹阅读观还注重知识的浃洽贯通，认为读者读书要循序渐进，不急不缓，由易到难一步一个脚印去做，并运用类推的方法使知识相互贯通，活学活用，使读者的下次阅读受益。

Instead+of+declaiming+Schiller+and+Shakespeare+on+stage+we+first+had+to+learn+our+craft+Fencing,+tapdancing,+singing+Throwing+and+catching+imaginary+balls+Recognizing,+with+closed+eyes,+fellow+students+by+their+hands+What+all+that+had+to+do+with+great+art+only+became+apparent+to+us+very+slowly+We+wanted+to+be+on+stage+When+we+were+at+long,+long+last+allowed+to+walk+the+boards,+we+quickly+understood+that+a+dark+stage+could+be+the+loneliest+place+in+the+world

外行人或许很难理解，把台词记住然后再表演出来是一件多么艰难的事情。当然还会出现怯场的情况，然而其他的困难呢？仅仅走台步就是所有事情中最难的一件了，没有一个人能够走得恰到好处。走台步是在表演一个角色，绝非像人们散步那样简单。然而，是什么角色呢？这就是表演的难题了。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。