In this example, k was 2 and you had exactly 2 terms. So once we know those two things we're now ready to derive the Poisson distribution and I'll do that in the next video.

在此示例中， k 为 2，您正好有 2 个项。 因此，一旦我们知道了这两件事， 我们就可以准备推导泊松分布了， 我将在下一个视频中进行介绍。