It eschews inheritance entirely, making ColorPoint own a reference to an instance of point rather than become a type of point.

它完全避开了继承，使ColorPoint拥有一个对Point实例的引用，而不是变成一种耦合点。

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In his example, Bloch creates two classes - a Point and a ColorPoint - and tries to create an equals method that works correctly for both.

在此示例中，Bloch创建了两个类：Point和ColorPoint，并试图创建一个equals方法来适用于这两个类。

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