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Michelle RobertsDigital health editor, BBC News
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Maggie 姐叱咤夜场25年,看遍风云变幻、人生百态,她对自己的事业仍抱有热忱(图:南方人物周刊记者 方迎忠)
We're all familiar with the high-pitched squeak of basketball shoes on the court during games, or tires squealing on pavement. Scientists conducted several experiments and discovered that the geometry of the sneakers' tread patterns determines the squeak's frequency, enabling the team to make rubber blocks set to specific frequencies and slide them across glass surfaces to play Star Wars' "Imperial March."
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