lit. the fish and the bear's paw, you can't have both at the same time (idiom, from Mencius); fig. you must choose one or the other; you can't have your cake and eat it; you can't always get everything you want
比喻都很想得到，难以抉择的事物。
比喻都很想得到，难以抉择的事物。
语本《孟子·告子上》：“鱼我所欲也，熊掌亦我所欲也；二者不可得兼，舍鱼而取熊掌者也。”