"The quality here is good, and you know you can use it on a global scale," says Steffen.

“这里的质量很好，你知道你可以拿到全球去比较。”Stenffen说道。

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Konrad Steffen of the University of Colorado, Boulder, leads one study of the Greenland ice sheet.

位于博尔德的科罗拉多州大学的Konrad Steffen先生负责一项格陵兰冰原项目研究。

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To test the idea, Dr Steffen conducted a test using passengers and a mock Boeing 757 fuselage.

为了测试这个想法，史蒂芬博士用一个模拟的波音757机身和一些乘客做了个实验。

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Climate change expert Konrad Steffen, of the University of Colorado in the United States, explained the impact of climate-induced sea level rises to coastal areas.

VOA: standard.2009.03.12

But Alex Steffen, journalist and sustainability expert, thinks this rhetoric operates under false assumptions.

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Many people have successfully funded books through Kickstarter including Alex Steffen and Robin Sloan.

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Steffen passed her certification exam on her way to losing another 30 to 40 pounds.

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