downhill
adv
adj
ˌdaʊnˈhɪl◄ adv
1 towards the bottom of a hill or towards lower land 向山下 （低地 ）;
I was going downhill and my brakes failed.
我正开车下山，刹车坏了。
2
go downhill
if a situation goes downhill, it gets worse 〔形势〕恶化，每况愈下;
Grandma fell and broke her leg, and she went downhill quite rapidly after that.
奶奶跌了一跤，摔断了腿，此后情况恶化得很快。
adj
3 on a slope that goes down to a lower point 下坡的;
downhill skiing
速降滑雪
It’s a long walk back, but at least it’s all downhill.
回程要走的路很长，所幸都是下坡路。
4
be all downhill (from here)/be downhill all the way (from here)
to be easy to do, because you have already done the hard part （从此）都是容易做的〔因为完成了困难部分〕，一切都好办了
The worst is over – it’s all downhill from here.
最困难的已经过去 — 从此一切都容易了。