当提及类的打开关闭原则，它可以通过抽象类和实体类实现行为的方式来确保。

When referring to the classes Open Close Principle can be ensured by use of Abstract classes and concrete classes for implementing their behavior.

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当提及类的打开关闭原则，它可以通过抽象类和实体类实现行为的方式来确保。

When referring to the classes Open Close Principle can be ensured by use of Abstract classes and concrete classes for implementing their behavior.

youdao