The only thing that differentiates the twins is the color of their eyes.这对双胞胎的唯一区别是他们的眼睛颜色。Our excellent customer service differentiates us from our competitors.优质的客户服务是我们与竞争对手的差别所在。Coloring differentiates the sexes in many birds.鸟的雌雄通常可就其颜色予以区分。What is it that differentiates these two substances?是什么构成了这两种物质的差别?