Their initial burden was greatest in affluent societies with strong R&D capacities to develop ever-better treatments.

这类疾病的负担最初主要集中在研发能力强大，可制订更好治疗方案的富裕社会。

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This year's event promises to be the largest rodeo ever, said Col. R. Wyn Elder, the commander of the 62nd Air Mobility Wing, the host unit for the event.

上校R。区允长老，第62空中机动联队司令，事件的主办单位表示，今年的活动有望成为有史以来最大的圈地。

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R. Duncan Mathewson. "This is the furthest point on that trail where gold has ever been found before, so it confirms that we're on the right trail."

我们跟随船上散落古物的分布一直向北航行，这是找到金子的最远的地方，这证明我们的路线是正确的。

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Sales of the R-Class have been sluggish ever since its introduction for the 2006 model year.

FORBES: 2012 Mercedes-Benz R350 Bluetec 4Matic

Restaurants like R Bistro with its ever-changing seasonal menu, craft cocktail bar Ball and Biscuit, and the innovative Black Market, which serves beef tongue and burgers, are interspersed with boutiques and art galleries, offering an urban experience that rivals more tourist-heavy metropolitan areas like Los Angeles and Boston.

BBC: The culinary heart of America��s heartland

Rep. Roy Blunt, R-Missouri, said it was like nothing ever tried before.

CNN: Senate approves $15 billion airline bailout