“唯一的”用英语怎么说？

她是壳牌公司法律事务部唯一的女性。She was the only woman in Shell's legal department.我们之间唯一的差别就是肤色。The only difference between us is the colour of our skins.我的猫古斯塔夫是我所有的一切——我唯一的伴侣。My cat Gustaf was the only thing I had—the only comp...