In the first section of this function, you set up objects needed to create the report, like the width and height of the canvas, as well as padding variables.

在这个函数的第一部分中，您设置了创建报告需要的对象，比如画布的宽度和高度以及填充变量。

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OK, so now, let's say that we had, actually, a function of two variables.

可能是这样的，现在我们可以说，有一个含有两个变量的函数。

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So, a function of several variables doesn't have the usual derivative.

因此，一个多变量的函数没有通常的导数。

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We'll then look at the quantity, internal energy, which we define through the first law, and we think of it as a function of two variables T and V.

接下来我们考虑内能，这是由热力学第一定律定义的物理量，我们把它看作T和V的函数。

麻省理工公开课 - 热力学与动力学课程节选

And, again, the rectangle represents your computer's RAM, the bottom represents the part of RAM that we generally call the stack, main conceptually ends up on the bottom of the stack followed foo by its local variables then the function say foo that it calls and on and on and on and up, but there is, in fact, something above all of this and we've seen this picture briefly and that's this thing called the heap.

再次，矩形表示的是计算机内存，底端表示内存的一部分,通常我们把它叫做堆栈，main函数在,堆栈的底端，之后是,它的局部变量，然后是它调用的函数,等等等等，但是那里有，实际上，在这个上面，我们粗略看看这个图画,这个东西叫做堆。

哈佛公开课 - 计算机科学课程节选

Sales are a function of three variables: store traffic volume, conversion rate (i.e. percentage of visitors who purchase), and average ticket.

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