Ernest Blatchley is a professor of engineering at Purdue University, and he joins us by phone from West Lafayette, Indiana.

欧内斯特·布拉奇利是普渡大学的工程学教授，他从印第安纳州的西拉斐特打电话过来。

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Most of us know about the five basic tastes (sour, sweet, salty, bitter and umami), and now scientists of Purdue University have found enough evidence to prove that "fat" is the sixth basic taste.

大多数人都知道五种基本的味觉----酸、甜、咸、苦，鲜。如今，美国普渡大学的科学家们又确认了一种新味觉----肥。

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Even before this latest study, one of the world's leading experts on impacts - Dr Jay Melosh of Purdue University, US - had shown that an airburst was not capable of producing the shock pressures necessary to make nanodiamonds.

BBC: Mammoth-killing space blast 'off the hook'