contrast作名词可数吗

　　The contrast of white and orange was so beautiful!

　　白色和橙色的对比真美丽啊！

　　There'd be a merry contrast betwixt my glory and my raiment!

　　我的荣誉和我的.衣着之间的对比是令人愉快的！

　　Mathematicians, by contrast, tend historically towards solitude.

　　相比之下，数学家在历史上倾向于独处。