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The study of M87?s supermassive black hole will be detailed in an upcoming issue of The Astrophysical Journal Letters.

最新一期的《天体物理学杂志》讲更详细的介绍关于M87特大质量黑洞的这项研究。

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The finding refines previous estimates of the size of M87's black hole, which ranged from one billion to more than six billion times the mass of the sun.

这次的发现修正了之前对于M87星云黑洞大小的估计，现在认为它的大小大约在10到60亿个太阳质量之间。

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And every year on January nineteenth -- Poe's birthday -- people watch for a man dressed in black to appear.

VOA: special.2009.02.02

And here in the middle of the page a little ways down: My love's striped black-and-white cotton frock, jaunty blue cap, white socks and brown moccasins were not quite in keeping with the large, beautifully cut aquamarine on a silver chainlet which gemmed her throat, a spring rain gift from me.

在这一页中间偏下的地方：,我的小情人穿着黑白条子的棉布裙，带着鲜艳的蓝色帽子，白袜子和亮皮鞋与她脖子上那条优美的,蓝宝石项链有些不协调,这是由于那场春雨我送给她的礼物。

耶鲁公开课 - 1945年后的美国小说课程节选

It is the story of a black woman's search for happiness and her true identity, during twenty-five years and three marriages.

VOA: special.2009.02.22

But now the long-snooty brand's camel-black-red-and-white check drapes rap singers who rhapsodize about it in their gritty songs.

FORBES: Yo, Plaid

Ms. Guillem's "partner" here was Elias Benxon's black-and-white film that first revealed the dancer as if looking through an Alice-in-Wonderland keyhole and eventually suggested that she had emerged from the silvery film in full color to dither around the screen and stage.

WSJ: Sylvie Guillem | Leaving Ballet Behind | Dance Review by

At Central High, today's 60%-black student body includes more of the state's top achievers than any other school.

ECONOMIST: Desegregation 40 years on