Bad habit: Not using class hierarchies.

坏习惯：不使用类层次结构。

youdao

Here is the screen shot of my Class hierarchies.

这是我的类层次结构的屏幕截图。

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I try to avoid making class hierarchies as they rarely pay off.

我尽量避免类层次为他们很少还清。

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I try to avoid making class hierarchies as they rarely pay off.

我尽量避免类层次为他们很少还清。

youdao