You can customize how many images are used (but there's a maximum of 10), the style (black, white and polaroid), width and height of the wallpaper and border of the images.

你可以自定义使用多少幅海报(上限为10张)，风格(黑白，宝丽来)，以及宽高比等选项。

youdao

These terms are clearly written in black and white. You can never deny them.

这些条件白纸黑字，一清二楚，想抵赖是抵赖不掉的。

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You can change the Settings so the photos are color or black and white.

你可以更改设置，把照片设成彩色或者黑白。

youdao

If you believe black men are criminals, then when you see a black man who is a criminal you'll chalk it down as support but you'll pay less attention to evidence that white men are criminals and some black men are not criminals.

如果你相信黑人都是罪犯，当你看到一个是罪犯的黑人时,你就会觉得这是证据,但你不会注意其他证据,证明白人也有罪犯,黑人也有不是罪犯的。

耶鲁公开课 - 心理学导论课程节选

That's something like black and white, are you good guy or bad guy?

CNN: Andrew Lau Interview on Talk Asia

And in a lot of cases, you've got black artist on stage and then audiences that are almost completely white.

NPR: Book Looks at White Youth and Hip-Hop Culture

Well, I'll bet you that, black and white, it's low-income Georgians who are the very people who are often disproportionately effected by the choices made in Atlanta.

NPR: Voting Rights Act Renewal Stalled in Congress