a surface that lies at an angle to the horizontal so that some points on it are higher than others

The roof is at a slope (= at an angle to a horizontal surface) of 30°. 屋顶有30°的坡度。

(part of) the side of a hill or mountain

a ski/mountain slope 滑雪坡／山坡

Snow had settled on some of the higher slopes. 雪堆积在一些较高的山坡上。

There's a very steep slope just before you reach the top of the mountain. 在你就要到达山顶之前要经过一个陡坡。

There are some nice gentle (= not steep) slopes that we can ski down. 那儿有一些我们可以滑雪的缓坡。

to be at an angle to the horizontal

The path slopes up/down to the house. 小路倾斜向上／向下通往房子。

The football pitch sloped at the south end, so one half of the game had to be played uphill. 我们学校的足球场南端呈斜坡状，所以比赛总是有一半不得不踢上坡球。

Synonyms: incline pitch

slope off （通常指为逃避工作）溜走