uphill
adjective, adverb uk/ˌʌpˈhɪl/ us/ˌʌpˈhɪl/
C2 上坡（的）；向山上（的）；朝上坡方向（的）
leading to a higher place on a slope
an uphill climb 向上的攀爬
running uphill 往山上跑
Compare: downhill
C2 费力的，艰难的
needing a large amount of effort
It'll be an uphill struggle/battle/fight to get the new proposals accepted. 要让新的提案获得通过会很艰难。
Compare: downhill