Kevin was amazed how John explained the usually very difficult math homework and made it look so easy.

凯文惊讶于约翰如何把通常很难的数学作业解释得如此简单。

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Kevin Balke, a research engineer at the Texas A&M University Transportation Institute, says that while smart lights can be particularly beneficial for some cities, others are so jammed that only a sharp reduction in the number of cars on the road will make a meaningful difference.

德克萨斯农工大学交通研究所的研究工程师凯文·鲍克说，虽然智能交通灯对一些城市特别有帮助，但有些城市太拥挤了，只有大幅减少道路上的汽车数量才能有效改变拥堵的局面。

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So Kevin Hall and his colleagues at the National Institute of Diabetes and Digestive and Kidney Diseases, in Bethesda, Maryland, decided to look at the problem in a new way.

因此凯文•豪尔和他所在国家糖尿病、消化和肾脏疾病研究所（马里兰州比色达）的同事们决定用新的方法来研究这个问题。

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Kevin Kern explains why so many people,of all ages and from every corner the world, feel compelled to make the journey to the gates of 3764 Elvis Presley Boulevard.

VOA: standard.2010.01.07

Kevin was so happy that he could now be part of this production job and he really enjoyed meeting his new friends from Weatherfield High School.

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Kevin Ryan became so immersed in his character, detective Francis Maguire, that he consistently ate with his prop knife.

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So Kevin and family flew to the Hangzhou hospital in November, but this decent man was not entirely sure he had made the right decision.

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