Black holes are created when large stars explode and collapse in on themselves.

黑洞是由于大型天体爆炸并自我坍缩而形成的。

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When the hydrogen used as fuel vanishes, and fusion slows, gravity causes the star to collapse in on itself.

当作为燃料的氢消失，且聚变过程减缓时，重力就导致恒星向内坍缩。

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You think the grief will make you smaller inside, like your heart will collapse in on itself, but, it doesn't.

你以为悲恸会使你内心渺小，好似你的心会崩塌，但是不。

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At a similar gathering last year, members of the so-called G20 set of advanced economies agreed on emergency spending to stem a global crisis brought on by the collapse of U.S.investment bank Lehman Brothers in late 2008.

VOA: standard.2010.06.05

On the other hand the Fed is also concerned with unemployment and the possibility of a collapse in the system.

另一方面,美联储也被失业和,这个体系中崩塌地潜在的可能性困扰着。

耶鲁公开课 - 金融市场课程节选

In essence, this collapse in stock prices -the one-day collapse in stock prices -I think in the U.S. The price was, depending on which index you were looking at, were down 21-22% in a single day.

实际上,这次股价暴跌,股价一天内的跌幅,当然在美国国内,要看你参考的是哪种股指,但基本上一天之内暴跌21-22%

耶鲁公开课 - 金融市场课程节选

If you were to assume that every point in the universe contained some information, then even a small office would be so densely packed with particles that it would collapse in on itself like a black hole, says Raphael Bousso, a physics professor at the University of California, Berkeley.

FORBES: Flatland?

On Thursday the U.S. Commerce Department reported that U.S. economic growth in the fourth quarter was unrevised at an annual pace of 0.6%. slowed by a collapse in spending on new homes and a slump in inventories.

FORBES: Magazine Article

As the collapse in spending on information technology marked the beginning of the downturn, its reversal may herald the end.

ECONOMIST: Things may be getting a little better