“Ten years ago we wouldn’t know how to make one,” said Steve Cummer, associate professor of electrical and computer engineering at Duke University Cummer.
“十年以前，我们不知道如何制造出一个这样的东西。”杜克大学电子与计算机工程学院副教授，史蒂夫•卡莫如是说。
“Ten years ago we wouldn’t know how to make one, ” said Steve Cummer, associate professor of electrical and computer engineering at Duke University Cummer.
“十年以前，我们不知道如何制造出一个这样的东西。”杜克大学电子与计算机工程学院副教授，史蒂夫•卡莫如是说。
"Ten years ago we wouldn't know how to make one," said Steve Cummer, associate professor of electrical and computer engineering at Duke University Cummer.
“十年以前，我们不知道如何制造出一个这样的东西。”杜克大学电子与计算机工程学院副教授，史蒂夫·卡莫如是说。
Content: In this colourful cummer, Joanna and LIndsey are going to buy some new clothes and fashion accessories to dress up themselves because of fashion sense.
内容：在这个绚丽的冬季，有着潮流认识的乔莉娜和琳茜计划买些新衣服和时髦的饰物来打扮本人。
Recently, Steve Cummer, Associate Professor of Electrical and Computer Engineering at Duke University announced that it is theoretically possible to create such a sound shield.
近日，杜克大学电子信息工程学院副教授SteveCummer声称，从理论上这种声音屏障是可造的。
Recently, Steve Cummer, Associate Professor of Electrical and Computer Engineering at Duke University announced that it is theoretically possible to create such a sound shield.
近日，杜克大学电子信息工程学院副教授SteveCummer声称，从理论上这种声音屏障是可造的。
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