There's a very straightforward13 reason, says Amanda Lenhart, a Pew14 senior research specialist.

皮尤高级研究专家阿曼达·伦哈特指出，这种现象背后的原因其实非常简单。

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In 1998, Cheng, then 64, was working night and day as a research specialist at the Ministry of Land and Resources.

1998年，64岁的程恩华还在国土资源部夜以继日地进行研究工作。

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"It's incredibly valuable," said Laela Sayigh, a research specialist in dolphin communication at the Woods Hole Oceanographic Institute.

“这个数据库有着惊人的价值，”伍兹·霍尔海洋学院的海豚交流研究专家Laela Sayigh说。

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Ted Dagne,African Affairs Specialist with the Congressional Research Service, predicted that violence is likely to increase in coming months as the Islamist group al-Shabaab, backed by foreign fighters, attempts to oust the transitional government.

VOA: standard.2009.06.26

Ryan asked one of her colleagues, a research specialist at the Texas Medical Center Library in Houston, to search the medical literature.

CNN: Tips for savvy medical Web surfing

Mary Ellen Biery, Research Specialist at Sageworks, contributed to this article.

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But it's fair to assume the vast majority of those respondents use Facebook, or Facebook in combination with some other social networks, said Aaron Smith, a senior research specialist at Pew.

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