According to a classic study of laughter by Robert Provine of the University of Maryland, Baltimore County, and his colleagues, laughter is an unexpectedly serious business.
美国巴尔的摩马里兰大学的罗伯特·普鲁文斯和他的同事做过一项典型的研究。根据他的研究，笑是一件极其严肃的事情。
Nevertheless, the company had won a raft of new contracts, including a deal to feed students at the University of Maryland Baltimore County and Eastern Conneticut State University in the US.
但是，公司已经获得大量的合约，包括一笔为美国巴尔第摩州马尔迪兰大学和东部康涅狄格大学的订单。
Says Robert Provine, a professor of psychology and neuroscience at the University of Maryland, Baltimore County.
巴尔缔摩郡的马利兰大学神经与心理学的一位教授如是说。
According to studies by Erle Ellis, an ecologist at the University of Maryland, Baltimore County, the vast majority of ecosystems on the planet now reflect the presence of people.
马里兰大学巴尔的摩分校的生态学家艾勒·艾丽斯(ErleEllis)研究表明，现在地球上的大部分生态系统都反应了人类的活动。
According to studies by Erle Ellis, an ecologist at the University of Maryland, Baltimore County, the vast majority of ecosystems on the planet now reflect the presence of people.
马里兰大学巴尔的摩分校的生态学家艾勒·艾丽斯(ErleEllis)研究表明，现在地球上的大部分生态系统都反应了人类的活动。
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