But no one's sure how well such studies model what happens in people, points out David Dorman of North Carolina State University in Raleigh.

但是没人能保证这项研究结论适用于人，位于罗利市的北卡罗莱纳州立大学的大卫·多尔曼指出。

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And while the company anticipated sales dropping due to its retreat from the residential marketplace, Chairman and Chief Executive David Dorman says revenue from enterprise segments may also come in low, thanks to continuing price pressure from competitors.

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