The bottom has fallen out of the travel market.

旅游市场出现了萧条局面。

《牛津词典》

The bottom had fallen out of the city's property market.

该市的房地产市场暴跌。

《柯林斯英汉双解大词典》

Tons of gold have fallen out of the sky in Russia after a cargo plane malfunctioned in mid-air this morning.

今天早上，俄罗斯一架货机在空中出现故障，数吨黄金从天而降。

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A tiny part at the bottom of the rocket had fallen out too early.

VOA: special.2009.07.01

And what's fallen out when we do that, because in each case, one of the first derivatives gives us the entropy.

当我们这样做时就得到了结果，因为在这些例子中，一阶导数是熵。

麻省理工公开课 - 热力学与动力学课程节选

The faces of the fallen looked out at the Senate hearing room -- the images of coal miners killed on the job.

VOA: standard.2010.04.27

In fact, in the early 20th Century, azulejo art had fallen out of favour.

BBC: The story behind Lisbon��s beauty

The last times the floor had fallen out of the economy, just that had occurred.

FORBES: Obama Bets On The Business Cycle - Again

This isn't the first time a space craft has fallen out of the sky.

NPR: Spy Satellite Expected to Return to Earth Soon