translation.en: And then as we start to define what does steepness mean, we realize it would be nice to have some measurements to really narrow it down, specifically what that means.
translation.zh: 然后我们确定陡峭程度是指什么， 我们认识到这是一个好主意，如果有一些测量 来真的缩小范围，特别是那意味着什么。