就像前面提到的，积分的一个应用就是面积的计算，通常我们不讨论面积本身，相反，是讨论某事物的面积。

As mentioned earlier, one of the applications of the integral is the calculation of area. Ordinarily, we do not talk about area by itself, instead, we talk about the area of something.

youdao

重新讨论或研究某事物；

Run back over sth discuss or consider sth again;

youdao