White on white is no contrast - you can't see anything.

白色在白色上面是没有反差，你看不到任何东西。

youdao

White on White is the metaphor for the memories fading away.

“白色上的白色”是记忆逐渐消逝的隐喻。

youdao

The interior's vast expanses of white walls, where the signs are white on white, add to the glow. Even inconsequential objects gain in lustre.

无限延伸的白墙，甚至标示也是白色的，整体上增加了空灵感，使得不重要的部件也闪闪发光。

youdao

So the black players on the team were forced to ask their white teammates to buy food for them.

VOA: special.2010.04.11

So binary search, the phonebook example, binary search on the pieces of paper on the white board, why is that?

是二分查找，例如电话簿的例子,对其中的某一页进行二分查找，为什么呢？

哈佛公开课 - 计算机科学课程节选

Inside the suitcase is a plain piece of white paper and the children were asked to draw the things they think they would need on the trip. Sometimes they get they wouldn't need.

行李箱里面是一张普通的白纸,我要求孩子们,在纸上画出他们认为必要的,旅行用品，有时候他们画出来的并不需要。

麻省理工公开课 - 媒体、教育、市场课程节选

"I would go for something more light-colored, a bit washed out, " she says, suggesting a faded blue floral on white or washed red on white.

WSJ: Coats to Wear for Spring

He found his answer by looking up, deciding to extend the ceiling's subtle, white-on-white pattern down two walls to the soffit level on one side and nearly down to the floor on the other.

WSJ: The Height of Charm | Anatomy Lesson

Back at Ballymany on that fateful night, the stallion with a distinctive white blaze on his face and four white "socks" was loaded into a horse box never to be seen again.

CNN: February 7, 2013 -- Updated 1450 GMT (2250 HKT)