分阶段变量是参数化在不同阶段执行的测试的一种有趣方式。

The use of phase-specific variables is especially interesting as a way of parameterizing the tests performed during various phases.

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使用“定义和目标”阶段中的预期设置度量正确的变量。

Measure the right variables using the expectations set in the "Define and Target" phase.

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要记住的关键概念是，在任何阶段都可以再次执行前面的步骤，从而加入新增的或原来没有发现的变量。

A key concept to remember is that you can loop back through the steps at any stage to incorporate variables that were added later or that you were unaware of.

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