Barbara Rolls of Pennsylvania State University told a news conference.

人们忽视食量的趋势令人担忧.

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Students at Pennsylvania State University enjoy free access to Napster, the music - sharing service.

宾西法尼亚州立大学的学生可以免费使用Napster下载音乐.

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The first such new world was discovered in 1993 by researchers at Pennsylvania State University.

1993年,宾夕法尼亚州立大学的研究人员首次发现了一颗系外行星.

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