THE two leading auction houses, Sotheby's and Christie's, have come a long way since the dark days of late 2008, when the sudden collapse of the art market caused their revenues to plummet.

经历了2008年下半年的惨淡日子，几近崩溃的艺术品市场让索斯比和克里斯蒂两大拍卖行的收入锐减，而现在它们又逐渐回到了正轨。

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On September 5, 1944, when making charcoal in the mountains of Ansai County, northern Shensi, he was killed by the sudden collapse of a kiln.

1944年九月五日在陕北安塞县山中烧炭，因炭窑崩塌而牺牲。

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The key stratum is not easy to cave, but once it is caved, there will be a sudden collapse of a rather thick stratum.

关键层较难崩落，但在崩落时具有突发性，会产生较大厚度岩层的突然垮塌。

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This man said at about five o'clock in the morning, he heard the dam collapse and all of sudden the water rushed towards the houses.

VOA: standard.2009.03.27

Fire crews said the main concern was the uncertainty of the sheer face, with sudden collapse a possibility.

BBC: Firefighters at the scene

Community leaders are at a loss to explain the sudden collapse of harmony.

ECONOMIST: Indonesia: Terror in the spice islands | The

The subsequent sudden collapse of Enron was unanticipated by the Compensation Committee during the negotiations with Mr. Lay in August 2001.

FORBES: Estate of Enron CEO Kenneth Lay Wins in Tax Court