And we also said that there's going to be exactly k terms here.

我们还说过这里正好有 k 个项。

So if you counted these as 1, 2, 3-- all the way, there's going to be k terms here.

所以如果你把这些算作1，2，3 - 一路走来，这里会有k项。

I can give you a couple of-- and just so you know, they'll be exactly k terms here.

我可以给你几个——你知道的，它们在这里正好是 k 个术语。