Joining a short term research program in China has not only allowed Pakistani agricultural scientist Sayyar Khan to push forward with his academic studies, but also given him a chance to see a country he had heard so much about.

巴基斯坦农业科学家 Sayyar Khan 在中国参加了一个短期研究项目，这不仅让他得以推进他的学术研究，也让他有机会去一个他久经耳闻的国家看看。

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But excessive drinking-three or more alcoholic beverages a day, most studies agree-has also been proven to send blood pressure climbing.

但是，过分酗酒，一天3杯或更多酒精摄入，许多研究都一致证明此种行为可以引起血压升高。

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Animal studies have confirmed that high doses are harmful, but some evidence that it may also be harmful at low doses has yet to convince regulators to take decisive action against the compound.

动物研究已经确认高剂量的双酚a是有害的。低剂量也可能存在危害，但是还没有足够的证据让监管部门下定决心对这种化学物质采取措施。

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In the past three decades, the manual has been used not only to diagnose patients, but also to select participants with particular disorders for research studies.

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Faris has also completed similar studies in rural North Carolina -- where the demographics were different, but the results were the same.

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Yes, exercise has been shown in many studies not only to raise a person's mood immediately, but also to work over time as an antidepressant.

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