You create the util package, along with classes in it.
您创建了util包，以及包中的类。
Cfrubylib - a pure ruby library with classes and methods for system administration.
Cfrubylib—一个纯ruby库，其中包含用于系统管理的类和方法。
It works with classes you define in your application rather than forcing the use of a set of generated classes.
它使用您在应用程序中定义的类，不必强制使用一组生成的类。
This gives the speed of direct access to data while keeping the flexibility of working with classes that you control.
在保持能够灵活地处理您所控制的类的同时，由于这是直接访问数据，还使速度加快了。
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。
This application is replacing the use of reflection with classes generated at runtime and immediately loaded into the JVM.
这个应用程序用运行时生成的、并立即装载到JVM的类来取代反射。
At the city's night schools, thousands of workers end their days with classes on every subject from car maintenance to law.
在这座城市的夜校里，数以千计的人们在结束了白天的工作之后，去夜校学习从汽车维护到法律的各种科目。
Also, client classes that instantiate our generic class must do so with classes that meet the declared constraint on what constructors exist.
同样，实例化泛型类的客户机类必须使用满足对构造函数存在所声明的约束的类来这样做。
In the case of JiBX, the most important part of its work with classes occurs when it's adding bytecode to the compiled class representations.
对于JiBX，处理类时最重要的部分是向编译的类表示中加入字节码。
If the framework gets cluttered with classes, you can add a factory class that assembles them into common combinations and provides a simpler API for common cases.
如果框架与类混杂，可以添加一个工厂类，将它们装配到通用组合中，并为通用情况提供一个更简单的API。
Models reconciliation of both logical and physical perspectives through realization of common interfaces. Class diagram with classes, localities, and interfaces 3.
通过实现公共接口的逻辑和物理透视图的一致建模。
I also assume that you know the basics of working with classes and objects in PHP, as the PHP components used in this article are written in compliance with OOP principles.
还假定读者了解在php中的类与对象的相关知识，因为文中所采用的PHP组件是遵照OOP原则来编写的。
I confess that I do not use automated tests systematically because my experience has been that they are most effective with classes whose public interface does not change often.
我承认我没有系统地使用自动化测试，这是因为我的经验表明，对于那些其公共接口不经常更改的类，自动化测试是最有效的。
When an annotation is defined, it can be annotated with @Retention, which determines what the compiler will do with classes, methods, or fields that possess that annotation.
定义了注释的之后，可以用 @Retention 对它进行注释，它可以决定编译器对使用这个注释的类、方法或字段执行什么处理。
In these cases, reflection won't work for you — reflection USES the JVM's class structures as the source of information, so it can only work with classes that have been loaded by the JVM.
在这样的时候，反射对您来说就不再是一种行之有效的办法——反射将JV m类结构作为信息源使用，因此它仅对已由JVM装载的类起作用。
But entering words and examples of their use on close to two million index CARDS was tedious work for the professors and graduate students who were also busy with classes and other research.
但是进入单词和例子，他们使用了200万张卡片，这些对于那些忙于学业和研究的专家和大学生来说是非常枯燥的工作。
With far less controversy, colleges could send messages about canceled classes, delayed buses, campus crises or just the cafeteria menu.
大学可以发送取消课程、公交车延误、校园危机或仅仅餐厅菜单的信息，而免受太多争议。
Under the guidance of counselors, these students are placed in classes with teachers who have had success in working with similar young people.
在辅导员的指导下，这些学生被安排与曾经成功和类似的年轻人相处过的老师一起上课。
I've taken college classes in a big auditorium with herds of people.
我和一群人在一个大礼堂修大学课程。
That was as it should be: kitchens were for servants, and the aspiring middle classes wanted nothing to do with them.
它应该是这样的：厨房是为仆人准备的，而有抱负的中产阶级不想与厨房有任何关系。
Associated with each lecture course are seminars, tutorials and laboratory classes which draw upon, analyze, illustrate or amplify the topics presented in the lectures.
与每堂课相关联的是研讨会、辅导课和实验课，这些课程回顾、分析、说明或加强了课堂上所讲的主题。
She speculated that professors might try even harder to make classes interesting if they were to compete with the devices.
她推测，如果教授们要与这些设备竞争，他们可能会在让课堂变得有趣方面下更多功夫。
I took a few anthropology classes with her and they were great, inspiring.
我和她一起上了几堂人类学的课，这些课都很好，很振奋人心。
Getting back into exercise can be a challenge in the best of times, but with gyms and in-person exercise classes off-limits to many people these days, it can be tricky to know where to start.
在境况最好的时候，重新开始锻炼身体也可能是一项挑战，但如今许多人都无法去健身房或参加面授的健身课程，就更是连从何处入手都很难知道。
I shared my frustration with Mr. Greg, who invited me to observe one of his classes.
我把我的沮丧告诉了格雷格先生，他邀请我去听他的课。
Nearly half of high-earning, college-graduate parents enrolled their children in arts classes before they were 5, compared with one-fifth of low-income, less-educated parents.
将近一半的高收入、大学毕业的父母在孩子5岁前就让他们上艺术课；而在低收入、教育程度较低的父母中，这一比例仅为五分之一。
There are classes with 15 students and classes with 30 students.
有15人的班级也有30人的班级。
He's trying to learn English fast with evening classes twice a week.
他在努力通过一周上两次夜校来快速学习英语。
A break between classes is a good time for students to play sports and talk with their classmates.
课间休息对学生来说是做运动和与同学交谈的好时机。
A break between classes is a good time for students to play sports and talk with their classmates.
课间休息对学生来说是做运动和与同学交谈的好时机。
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