抽象类

All Expression classes are derived from the abstract base class Expression.

所有的表达派生类从抽象基类中的表达。

And abstract nouns were categoried as: nominal abstract, verbal abstract and adjectival abstract nouns.

抽象名词又分为名类抽象名词、动类抽象名词和形类抽象名词。

But this kind of entity may insurmountably have some uncertainties when it is expressed abstractly to the spatial object of GIS, and these uncertainties are the uncertain factors including error, inaccuracy, illegibility and so on.

但是这类实体在抽象描述为GIS的空间目标时难以避免地会带有一定程度的不确定性，这种不确定性指的是在进行抽象描述时随之产生的误差、不精确性、模糊性和含混性等不确定性因素。

Name unmarshalling method call unmarshalling context method to push instance on stack unmarshal "firstName" field value from "first-name" element unmarshal "lastName" field value from "last-name" element call unmarshalling context method to pop instance from stack

JiBX 通常将解编排的代码变成虚方法添加到类中，添加的虚方法的名称以"JiBX"开头。在清单 4 中，我列出了 Customer 解编排方法的一部分抽象操作序列和 Name 解编排方法的完整抽象操作序列。

You decide to leave that hierarchy in place because you believe that, although the Circle and Ellipse are related, you don't want to have nonabstract leaf classes in your hierarchy, and several implementation problems occur when you try to derive the Circle class from the Ellipse class.

因为你相信，虽然 Circle 和 Ellipse 是有关系的，但是在你的类继层次内，你不想要非抽象的叶子类，所以你决定使用这个层次。当你尝试从 Ellipse 类派生 Circle 类的时候，会发生一些实现上的问题。

PS, to ppl think destructor in c++ bad. it's really one of the thing java(no idea about c#) never did properly. destructor is guarantied to be called when object's life time finished. anything known is better than unknown.

单件和抽象工厂完全两码事，抽象工厂不过是用来创建一个接口的对象而无须指定具体的类，在销毁对象的问题上，和new一个对象出来并没有本质上的区别。

China Engineering and the teaching has yet to fully utilize the power of MATLAB, MATLAB existing books mostly as a computer application tool there, not with the specific disciplines of organic materials combined, MATLAB GUI interface design, will be teaching content according to a certain order of the structure, using simple language, a rich display screen in front of the students. not only improes the students interested in this program, also makes some of the more abstract concepts of the past and the process of teaching students to reflect difficult to understand and master the content, through iid, image of the method explained to the students, so that students more easily understand and grasp. MATLAB and the emergence of soling this problem, MATLAB based on its powerful calculation and graphics functions so as to sole the problem, The system is controlled teaching address the dull, abstract characteristics do.

而我国工科类的教学还未能充分利用MATLAB的强大功能，现有的MATLAB书籍大都作为计算机应用工具书出现，未能与具体学科的教材有机地结合起来，MATLAB中的GUI界面设计，将教学内容按照一定的结构顺序，用简洁的文字、丰富的画面展现在学生面前，不仅提高了学生学习本课程的兴趣，还使得一些比较抽象的概念和过去教学过程中学生反映难以理解和掌握的内容，通过生动、形象的方法向学生阐明，使学生更容易理解和掌握，而MATLAB的出现解决了这一问题，MATLAB基于它强大的计算和绘图功能从而解决了这一问题，本系统就是针对解决控制教学中的枯燥，抽象的特点而做的。

Thus, according to the slight change of forms, I generalizes Wu Long-Rong's painting style into: incubation of oil painting, abstract division stage, semi-division stage, Op Art visual stage and image division stage.

因此研究者依其形式上的微幅改变，将吴隆荣的绘画风格归纳为：油画基础酝酿期、抽象分割期、半抽象分割期、类欧普视觉时期，以及具象分割期。

ECMAScript does not contain proper classes such as those in C++, Smalltalk, or Java, but rather, supports constructors which create objects by executing code that allocates storage for the objects and initialises all or part of them by assigning initial values to their properties.

类：引用类型通常叫做类，它是抽象了的对象，相对实例而言。 JavaScript 是基于原型继承的语言，因此这里指的&类&与 java 等强类型语言中的&类&有所不同，在某些场合它也被称为&伪类&。

We generally divide abstraction into two categories, namely, cold abstraction represented by Malevich and Mondrian and hot abstraction represented by Pollock and De Kooning. Both of them adopt a positive expression_r_r.

我们一般将抽象分为两类，即以马列维奇和蒙德里安为代表的冷抽象，以波洛克和德库宁为代表的热抽象，这两种抽象都采取了肯定的表现方式。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失