Historians suggest that the advent of mass tourism began in England during the industrial revolution with the rise of the middle class and the availability of relatively inexpensive transportation.

历史学家认为，大众旅游的出现始于工业革命时期的英国，当时中产阶级崛起，交通费用也变得相对便宜。

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With an increasingly affluent middle class, chunyun tourism is also on the rise.

随着中产阶级的不断增加，春运的旅客也在增加。

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With an increasingly affluent middle class chunyun tourism is also on the rise.

随着中产阶级的不断增加，春运的旅客也在增加。

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Experts say job losses might slow later this year, but the unemployment rate could rise until the middle of next year.

VOA: special.2009.05.29

Middle east oil is critical to the rise of India and China, and in that sense it's very much part of the economic process.

中东石油,对于中印的崛起非常关键，因此它是东南亚经济发展的,重大保障。

普林斯顿公开课 - 国际座谈会课程节选

But climate change negotiators worry that without quick action, the carbon footprint of countries like India and China will rise dramatically as their fast-growing economies propel millions into the middle class.

VOA: standard.2009.11.27

This has the perverse result that if the country gets richer, the poverty rate can still rise, as long as incomes at the top and in the middle rise faster than those at the bottom.

ECONOMIST: The poor: The mountain man and the surgeon | The

The fact is, while a lot of work remains, especially to rebuild a strong middle class and offer working folks new pathways to rise into the middle class, our economy is better positioned for tomorrow than most of those other countries hit by the financial crisis.

WHITEHOUSE: President Obama Nominates Jack Lew for Secretary of the Treasury | The White House

While selling to 106 different countries, the biggest market remained North America, but with Africa in a strongly-growing second place, and sales of expertise to the Middle East on the rise as well.

BBC: Scottish independence: energy's alternating currents