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."
《请回答1988》是豆瓣综合评分最高的韩剧，剧中的这个场景一度成为中文网络世界流行的表情图片。资料图
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He said the government forces on the ground "were outnumbered... The assailants set fire to homes and markets during fighting that lasted between three and four hours." Several senior local officials were killed including the county commissioner and executive director.