Because I might have written some code in which I'm expecting that integer particular variable to have an integer value.

因为我可能写了一些代码,来把一些,变量的类型，指定为。

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And unlike n, l can start all the way down at 0, and it increases by integer value, so we go 1, 2, 3, and all the way up.

不像n，l可以从0开始取，然后每次增加一个整数，所以我们可以去1，2，3，一直下去。

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