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。

youdao

So the allowed values for m sub l 0 are going to be negative l, all the way up to 0, l and then up to positive l.

所以m小标l的可能值,是从负l，一直到，然后到正。

youdao

So the allowed values for m sub l 0 are going to be negative l, all the way up to 0, l and then up to positive l.

所以m小标l的可能值,是从负l，一直到，然后到正。

youdao