slope

滑雪斜坡上覆盖着新雪。

The ski ___slope was covered with fresh snow.

我们必须爬上一个陡峭的斜坡才能到达山顶。

We had to climb a steep ___slope to reach the summit.

这条直线的斜率是2。

The ___slope of this straight line is 2.