It is important for some classes to have exactly one instance.
重要的是，一些班级有精确的一个实例。
Marcela Franco, who was 26, was registered for some classes at Santa Monica college.
玛塞拉·弗兰科今年26岁，在圣塔莫尼卡学院注册了一些课程。
Most of the material in this course is based on cases. For some classes, however, we will rely on readings from two excellent books.
本课程大部分的内容皆以个案为主。然而，对于部分的课程，我们将撷取两本卓越的书籍来阅读。
I wish they'd reduce some of the compulsory classes for the course.
我希望他们能减少这门课的一些必修课。
Some people have argued there's a module for sociology, for dealing with human groups, races and classes and so on.
有些人认为存在一个社会学模块，用以面对各种人类团体，种族以及阶级等等。
Next, you add some base classes for entries, objects, and authors.
接下来，您应该继续为项、对象和作者添加一些基本类。
Once this is done for all the use cases, we analyze the Implementation Model of the code to check if some logical grouping of the classes (files) already exists in the code.
一旦对所有用例都完成了，我们就分析代码的实现模型来检查某些类（文件）的逻辑分组是否已经在代码中存在。
For example, we might add user interface logic that we want to keep separate from our model, or we might add some classes for performance reasons.
例如，我们可能会添加想与模型分离开来的用户接口逻辑，或者我们可能会出于性能方面的原因而添加某些类。
You can argue (and some of us did) that we should have removed it from those two classes as well, but for good or for ill we have landed where we have.
你可能主张(我们的一部分开发人员抱有同样的态度)：应该将它从这两个类中移走，然而好也罢歹也罢，我们终究作出了选择。
The API itself contains some helper classes for constructing the appropriate responses with very few lines of code.
API本身包含一些辅助类以便用很少的几行代码就可以构建合适的响应。
Notice that in the example, the more modest conclusion "some philosophy classes are hard for some students" would not be a hasty generalization.
在上述示例中，如果收缩结论，改为比较中庸的“一些哲学课对一些学生而言是困难的”，那么就不是过度的概括了。
Some yoga instructors offer private or semi-private classes for students who want more personalized training.
一些瑜伽教练会提供私人的或是半公开的课程，教授那些想专门学习的学员。
Therefore, whenever you feel that standard set of WSA stub classes doesn't suit your application, you can refer to this tutorial for some ideas about customization.
因此，只要您觉得WSA存根类标准集不适合您的应用程序，就可以参考此教程了解一些自定义相关知识。
Too many service classes can create the potential for some "hungry" workloads to not get attention they need in time.
太多的服务分类可能导致某些急需资源的工作负载没有得到及时关注。
Some side effects are going to be long argument lists for some of the classes/components.
有些类/组件可能会出现参数列表变得太长的现象。
ODFDOM is able to provide not only the appropriate means to set date and time formats, but also some special style classes for many kinds of formats.
ODFDOM 不仅提供合适的方法来设置日期和时间格式，还有一些特别的类用于这种格式。
In addition, you'll need to add some XML API classes along with classes for working with Numbers, as in Listing 1.
此外，还需要添加一些XMLapi类以及用于处理数字的类，如清单1中所示。
At a school in the Garden City district of the rebel capital, some of the students have returned for a few hours of classes.
在班加西的花园区，有些孩子现在恢复一天上几个小时的课。
For example, consider an EJB module that includes an ejb-jar.xml file and some classes.
例如，包括 ejb-jar.xml文件和一些类的EJB模块。
Listing 7 shows some test classes for the ToString annotation.
清单7展示了ToString注释的一些测试类。
As you'll see, there are a lot of them, so this class should show you where you can get some real bang for your buck from creating widget classes.
正如您将看到的，这类方法有很多，因此，ListBox窗口小部件类显示了从创建窗口小部件类中可以获得的一些实际的好处。
A linked problem is the tendency for ETFs to be the main way in which investors seek exposure to some asset classes, notably gold.
由此牵出的问题是，ETFs会成为投资者寻求曝露一些资产类别的主要方式的趋势，特别是黄金。
For now, let's see some examples of using simple data types in your classes. Consider the following class.
现在先来看一些在类中使用简单数据类型的示例。
SQLObject provides some Style classes corresponding to common database naming conventions. For instance, if your column names look likeThis, instead of like_this, you can use the MixedCaseStyle
SQLObject提供了一些与常见数据库命名约定对应的 Style 类。
Within that tag is the data for the event marked up with different tags, some with the specific classes for the event data.
在这个标记中是使用不同的标记进行标记的事件数据，有些人用特定的类来标记事件数据。
As I've looked over some of these — I've been reading more and more code for my classes and my research — I believe there are some general principles you can follow.
因为我已经看过他们其中的一些代码——在我的教学和研究中我已经阅读过非常多的代码——我认为您可以遵守一些通用的原则。
For any two classes that have some relationship, identify the semantics of the relationship: is it association, aggregation, composition, or inheritance?
对于任意两个之间具有关系的类，确定关系的语义：是关联、聚合、合成还是继承？
The other classes are the major business classes that make up this system; details for some will be shown in future articles in this series.
其他的类是一些组成系统的主交易类；其中的一些详细资料在这一系列的以后文章中介绍。
The other classes are the major business classes that make up this system; details for some will be shown in future articles in this series.
其他的类是一些组成系统的主交易类；其中的一些详细资料在这一系列的以后文章中介绍。
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