上周，皮尤研究中心发布的报告中显示，在08年大选中出现的选民年龄差距呈现出扩大态势。
The Pew Research Centre reported last week that the age gap that emerged in the 2008 election remains wide.
总部设在德克萨斯大学西南部的圣保罗医疗中心，美达临床研究中心正在准备扩大一期临床研究的空间（目前有两到四个病人）到2009年。
Headquartered on the campus of St. Paul Medical Center at the University of Texas Southwestern, MCRC is preparing to expand its phase I space (which currently sleeps two to four patients) in 2009.
双方宣布扩大中美清洁能源联合研究中心研究与开发合作，新启动一个提高中载至重载卡车能源效率的技术合作领域。
The two sides announce the expansion of cooperative research and development under CERC by launching a new technical track to improve the energy efficiency of medium-duty to heavy-duty trucks.
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