persistent类旨在使数据持久性变得简单。
在这个示例中，您将使用JD o持久化contact类。
For this example, you'll use JDO to persist the Contact class.
持久性类最好放在.rpy文件所导入的模块中。
A persistence class should best live in a module that the.rpy file imports.
实际上，代理类是持久化类的子类。
The proxy class is an actual subclass of the persistent class.
结果显示中国人仍然看重婚姻的稳定性和持久性类的特征。
The findings show that Chinese people still value the stability and long-lasting of marriage .
结果显示中国人仍然看重婚姻的稳定性和持久性类的特征。
The findings show that Chinese people still value the stability and long-lasting of marriage .
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