This makes it easy for functions to know where their activation record is — they are simply defined in terms of the stack pointer.

这对函数了解自己的活动记录在什么地方提供了方便——它们可以使用堆栈指针的形式简单地进行定义。

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If a function is executing, then the stack pointer is pointing to the top of the whole stack, which is also the top of that function's activation record.

如果一个函数正在执行，那么堆栈指针就会指向整个堆栈的顶部，这也是该函数活动记录的顶部。

youdao