The police are trying to recruit more black and Hispanic officers.

警方正试图招收更多的黑人和西班牙裔的警官。

《柯林斯英汉双解大词典》

Blacks are more black, colors are more vibrant, and has no limit on viewing angles.

黑色会更黑，彩色更加鲜明，且没有视角限制。

youdao

Cyclists take in more black carbon because they breathe faster and deeper than walkers.

骑自行车者比步行者吸入更多黑碳，因为他们呼吸得更快更深。

youdao

So did the local police. The next day more than sixty black students took every seat at the lunch counter.

VOA: special.2010.01.29

I'd like to go by climbing a birch tree, And climb black branches up a snow-white trunk toward heaven, till the tree could bear no more, But dipped its top and set me down again.

我真想去爬白桦树，沿着雪白的树干，爬上乌黑的树枝，爬向那天心，直到树身再支撑不住，树梢碰着地，把我放下来。

耶鲁公开课 - 现代诗歌课程节选

There are plenty of pro-slavery writers who also, to some extent, whether out of guilt or out of awareness, saw slavery as wrong, but they saw it as a problem more for white people than for black people.

还有一些亲奴制的作者,在某种程度上,或不知廉耻或未曾意识到,他们错误地看待了奴隶制,他们更看重奴隶制对白人的影响,而不是对黑人种族本身的影响

耶鲁公开课 - 美国内战与重建课程节选

So there's going to be more unemployment, more poor people, more black homeless and more poverty.

CNN: Commentary: Obama, Cosby, King and the mountaintop

While more black women have children outside of marriage, white women are the fastest growing demographic.

FORBES: Romney Can't Support Single Moms

My approach has been to buy more of the colors that go with black and no more black.

WSJ: Tina Gaudoin on Style: Back to Black