uphill

剑桥词典

leading to a higher place on a slope
上坡（的）；向山上（的）；朝上坡方向（的）
an uphill climb 向上的攀爬
running uphill 往山上跑
比较
downhill
needing a large amount of effort
费力的，艰难的
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。
比较
downhill 返回 uphill