You can't make an omelet without breaking eggs. 鱼与熊掌不可兼得啊.虽然这个俗语字面翻译过来是想做煎蛋卷就必须打碎鸡蛋,但表达的意思是 “有得必有失”, “鱼与熊掌不可兼得” 正好跟这个意思相配.