In there, I want to make this distinction, this nuance: the evaluator is still going to be taking those expressions and using its rules to get a value, but it's not going to print them back out.

在这里，我想要做这么一个，细微差别：运算器依然会,对表达式,进行求值，但是不会,显示结果值。

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That code says the following: the IF says, I've got an expression, I'm going to evaluate it.

代码的含义是这样的：,我有一个表达式，我会去对这个表达式求值。

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What do you think should happen if I evaluate that expression?

你认为我对表达式求值的话,会发生什么？

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