马萨诸塞州塞勒姆大学的运动科学助理教授贾克琳·诺伯格说，正是这种奇特的形式使竞走成为一项有吸引力的活动。
It's this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
德国波恩大学的研究人员阿克塞尔·诺斯纳吉尔表示，这个差别对于研究气候变化是至关重要的。
Dr Axel Nothnagel, a German researcher from the University of Bonn says the difference is crucial in studying climate change.
我们这节课的起始年代，即十七世纪，除了伦敦这个巨型的城市，英国最大的城市是诺里奇和埃克塞特，以及北部的约克。
In the time we're starting this course in the seventeenth century, besides London, which is this gigantic place, the biggest cities in England were Norwich and Exeter, and York in the north.
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