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.
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.
结果表明：果实横切面从外到内是表皮层、石细胞层、中果皮及内果皮组成的果肉组织。
The results were as follows: Persimmon fruit consists of epidermis, sclereid layer and pulp tissues from outside to inside in the fruit transverse section.
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