An Entity class needs a primary key.
Entity类需要一个主键。
You can also create a primary key class for entities that have composite keys.
还可以为具有组合键的实体创建一个主键类。
When you create the map, you must pass in the class for the enumerated key.
在创建映射时，必须为枚举的键传入这个类。
Using the core Security class, an authentication key is generated and written to the session.
通过使用核心Security类，生成认证密钥并将其写入会话。
The JAXP SAXParserFactory class is the key to being able to change parser implementations easily.
JAXPSAXParserFactory类是能够轻易更改解析器实现的关键。
In this case, the class name is implicitly used as a key.
在这一情况中，类名隐式地用作一个键。
The authentication key is set as a class variable in your controller.
认证密钥在控制器中被设为类变量。
The key manager can be a helper class.
键管理器可以是一个助手类。
The key class contains the unique primary key implementation for the bean.
该键类包含bean的唯一主键实现。
Before we end this class, we go over the key words and key sentences.
大屏幕显示重点词汇、重点句型，师生一起复习一遍，结束这节课。
PDT will also pop up a code completion window while you key class names.
当输入类名时，PDT也会弹出代码补全窗口。
There are several key pieces of this class.
这个类有几个关键之处。
It is the key point of encouraging learning emotion and improving the class quality.
任务型语言教学是关注学习情感、提高课堂质量的关键。
The key concept is that it is the abstract base class that controls the workflow.
关键点是抽象类控制这个流程。
This class manages four values, each value has a specific field key.
此类管理4个值，每一个值都有特定的字段密钥。
The key purpose is to build relationships in the Intro to Golf class.
最主要的目的是通过高尔夫介绍课建立联系。
Each one-to-one association is buried as a foreign key in the table of either class.
每个一对一的关联在表中任一类中充当外键。
Saving only public key information is not supported by this cryptographic storage class.
此加密存储类不支持仅保存公钥信息。
To determine class management objectives of vocational colleges is the key to class management.
高职院校班级管理目标的确立，是班级管理的核心价值所在。
The instructor will elaborate the key points and explain the puzzles in class.
教师主要对教材中的重点、难点、疑点问题予以讲解。
High quality human resource is one of the key factors for building world-class university.
优质人力资源是建设世界一流大学的关键因素之一。
The remarkable university idea is the successful key to organize the first-class university.
卓越的办学理念是一流大学办学成功的关键。
The remarkable university idea is the successful key to organize the first-class university.
卓越的办学理念是一流大学办学成功的关键。
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