Raffles Medical Group (RMG) is a leading private healthcare provider in Asia, operating medical facilities in thirteen cities in Singapore, China, Japan, Vietnam and Cambodia.

莱佛士医疗集团是亚洲领先的私立综合性医疗服务提供者，在新加坡，中国，日本，越南，和柬埔寨的13个城市中拥有多家医疗机构。

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Thirteen counties and cities in Guizhou have recently experienced several days of gale winds, hail and rain that has affected over 180000 people and one person missing.

连日来，贵州出现大范围大风、冰雹、降雨等天气，全省共有13个县市的18万多人受灾，1人失踪。

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Brown: However, there is a thirteen-hour difference between the two cities.

布朗：我们两座城市的时差是大约十三个小时。

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Researchers from the Pew Charitable Trusts recently looked at how thirteen American cities are trying to balance budgets in a time of recession.

VOA: special.2009.07.13

Thirteen of the 20 cities surveyed showed accelerating declines with only Washington DC and Seattle recording monthly gains on a non-seasonally adjusted basis.

FORBES: Case-Shiller Home Price Index Officially Double-Dips, Goldman 'Cautiously Optimistic'

The positive stuff that can be cherry-picked off the report, the fact that housing prices increased on a monthly basis for the first time in eight months and thirteen of the twenty cities showed monthly increases can be attributed to a slowdown in the number of foreclosures sold for the month.

FORBES: Case-Shiller Brings No Good News, More Bad News For Housing

Thirteen of the 20 largest cities in the world, such as Rio de Janeiro, Tokyo, Karachi and Manila, are on the coast.

UNESCO: EDUCATION