控制反转模式(也称作依赖性介入)的基本概念是：不创建对象，但是描述创建它们的方式。
The basic concept of the Inversion of Control pattern (also known as dependency injection) is that you do not create your objects but describe how they should be created.
控制反转模式(也称作依赖性介入)的基本概念是：不创建对象，但是描述创建它们的方式。
The basic concept of the Inversion of Control pattern (also known as dependency injection) is that you do not create your objects but describe how they should be created.
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