对于给定的x，对应一个切面，就可以得到一个y的取值范围，从图片上看，是从切面的最左边到最右边。

For a given value of x, so that's a given slice, I have a range of values for y, that is, from this picture at the left most point on that slice to the rightmost point on that slice.

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原因就是，这对应于对x从0到,从0到1的所有情况。，to，integrating，x，from，zero，to，two，，and，y，from，zero，to，one。,这是一个矩形，这样分割切面，无论x从0到2取哪个值，y的取值都是从0到。

Well, the reason for that is this corresponds in both cases y It's a rectangle. So, if I slice it this way, 1 you see that y goes from zero to one for any x between zero and two.

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为了消除这股难闻的问题并对砧板消毒，你可以用半个柠檬的切面对砧板进行擦拭或者用从瓶子里直接拿去来的未稀释果汁清洗。

To get rid of the smell and help sanitize the cutting board, rub it all over with the cut side of half a lemon or wash it in undiluted juice straight from the bottle.

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