In any programming language, after you learn how to assign values to variables and pass parameters, you need to test those values and parameters.

在许多程序设计语言中，我们都知道，在定义了变量的值或者是传递参数后，都需要测试这变量的值和参数值。

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"Working now with children, I understand completely how important it is to pass on the right values, " he said.

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