How to add an instance variable using Refactoring Browser?

如何添加一个实例变量使用重构浏览器吗？

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Other aspects could be aggressively modified by the refactoring browser at will, in order to simplify the code.

其它方面应可以被重整浏览器积极地随意修改，以简化程序。

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Therefore, a refactoring browser could potentially leverage the unit test suite to determine what aspects of behavior are important.

因此，重整浏览器可以潜在地利用一组单元测试来确定行为的重要方面。

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