单词:stereum ostrea
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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
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。
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
The Colosseum or Flavian Amphitheater was begun by Vespasian, inaugurated by Titus in 80 A.D. and completed by Domitian. Located on marshy land between the Esquiline and Caelian Hills, it was the first permanent amphitheater to be built in Rome. Its
Washington Newseum Honors 82 Journalists Killed in 2012 They were killed last year while doing their jobs. The Newseum in Washington has added 82 names to its Journalists Memorial. Photojournalist Ahmed Ismael Hassan al-Samadi was shot in Bahrain whi
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