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DAVID GREENE, HOST: OK, now let's talk about some light that is probably not as good for you. This is the light coming from your smartphone or other screens. It's known as blue light. And it can really interfere with your sleep. Some people are using
2017年NPR美国国家公共电台11月
Then, Ostrum's crew made another discovery - lying next to the Raptor was a second skeleton. 紧接着，奥斯特伦姆的团队有了另一个发现，在迅猛龙旁边还有第二具骸骨。 Two Raptors, side by side. 两头迅猛龙紧挨着。
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. One of the most important archaeological finds in history was the Dead Sea Scrolls. These documents include some of the earliest written records of the
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主演：泽丹内克斯维拉克安德列查利蒙史黛拉查娜克娃 简介：1988年的布拉格，大提琴手路卡（Zdenek Sverk 饰）丢掉了乐团的工作多时，只能靠为殡仪馆伴奏和修补墓碑为生。这位大龄单身汉在
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By David McAlary Washington 05 April 2007 Scientists have discovered a genetic reason why some dogs are small and others big. They say the finding has implications beyond canine size, since the work applies to the study of other complex genetic trait
2007年VOA标准英语（四月）
The Unsung Heroine Who Helped Shape 'Suicide Squad' AUDIE CORNISH, HOST: The summer's final big comic book movie opened today. Suicide Squad is not an ordinary superhero movie. For one thing, it's about supervillains. And its original story was conce
2016年NPR美国国家公共电台8月