black and white除了单纯的“黑色和白色”，它还能表达“黑白分明的；没有任何混乱或差异的空间”。

【例句】
Love isn't always black and white, you know. You have to accept that there are many gray areas in relationships.
你知道的，爱情中不可能总是黑白分明，你必须接受那些关系中的很多暧昧情愫。

I don't understand why you don't believe me! Look, it's written here in black and white!
白纸黑字摆在这，你为什么就是不信我！