举例来说，您可能希望使用事务控件修饰所有的数据库操作。

For example, you might want to decorate all your database operations with transactional controls.

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限定符：持久化操作可以进一步限定或修饰。

Qualifiers: a persistence operation can be further qualified or decorated.

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问题是程序员可能会无意中编写这样的代码(比如，由于“复制和粘贴”操作，错误地在字段声明中包括静态修饰符)。

The problem is that programmers could accidentally write such code (say by mistakenly including a static modifier in a field declaration, due to copy-and-pasting).

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