/ˌdaʊnˈhɪl ||; ˈdaυnˌhɪl/adj adv(going) in a downward direction; towards the bottom of a hill 下坡；向山脚: It's an easy walk. The road runs downhill most of the way. 这条路很好走，差不多都是下坡路。 [OPP] uphill 反义词为uphillgo downhill to get worse 变坏；走下坡: Their relationship has been going downhill for some time now. 他们的关系走下坡已经有些时候。