And this is a constructor, so we need to pass two parameters into this constructor.

这是一个构造函数，因此我们需要将两个参数传递给这个构造函数。

There's a model that also has just two parameters called a power law model that says things slow down, but it doesn't have an upper bound.

有一个模型也只有两个参数， 称为幂律模型， 它表示速度会减慢，但它没有上限。