fifty-fifty
adj, adv (infml 口) shared or sharing equally between two 对半(的); 二一添作五
divide the profits on a fifty-fifty basis, ie take equal shares 平分利润
a fifty-fifty chance of winning, ie an equal chance of winning or losing 胜负的可能性参半
We went fifty-fifty on dinner, ie shared the cost equally. 我们平摊用餐费.