That makes solar a leveraged sector in which a relatively small change in U. s. policy could make a huge difference to individual stocks.

不过，太阳能板块仍具有相当的杠杆性，只要美国国家政策有一个相对较小的变化，就可以使得该板块的个股发生天大的变化。

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The study was funded by the U. S. National Institutes of Health as well as GlaxoSmithKline, which makes Avandia.

该研究由美国国立卫生研究院以及葛兰素史克公司—文迪雅制造商提供资助资金。

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The value of the euro currency has plunged for example, which makes American exports - key to the U.S.economic recovery - less competitive.

VOA: standard.2010.02.26

That means more melting ice in the Arctic, dumping fresh water into the salty sea and making a mess of the all-important Gulf jet stream, which makes northern U.S. habitable.

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Consumer spending, which makes up about 70% of the U.S. gross domestic product, is expected to be about in line with its activity last year, which had more pent-up demand and a larger trough to climb.

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U.S. exporters are benefiting from the long-term weakening of the U.S. dollar which makes American goods cheaper overseas.

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