If you scroll back up on the printout or screen here, you'll see that you can actually not only declare function's prototypes, their general structure.
如果我回滚到打印输出或者这个屏幕,你们将看到你们不仅可以声明函数的原型,它们的一般结构。
So you can scroll back through your history, which is also useful for time's sake.
所以我们可以滚回到我们的历史记录,这个可以节约我们的时间。
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