音标:['sætʃәreks] ;
饱和器

In a major change to his cabinet, US President Trump has fired Secretary of State Rex Tillerson and nominated CIA Chief Mike Pompeo to replace Tillerson as his top diplomat. While the announcement of the decision may be sudden, it did not come as a c

发表于:2018-12-24 / 阅读(181) / 评论(0) 分类 2018CRI中国国际广播电台

Mini T. Rex Recovered In a study in the journal Science, researchers announce the discovery of a dinosaur 125 million years older and one-nintieth the size of T. Rex, but having virtually the same body plan as the giant dino. Cynthia Graber reports.

发表于:2019-01-02 / 阅读(223) / 评论(0) 分类 60秒科学

一个历史性的节点变成一场历史性的闹剧,腐国脱欧公投这事儿真是闹个不停从全球瞩目的公投结果脱欧卡梅伦撩膀子不干了英国人民悔了苏格兰嚷嚷着要独立入欧欧盟决定或把英语剔除欧盟

发表于:2019-01-03 / 阅读(168) / 评论(0) 分类 英文语法词汇

By David McAlary Washington 26 June 2006 Members of the space shuttle Discovery crew leave the Operations and Checkout building during a count down dress rehearsal for flight STS-121 at the Kennedy Space Center in Cape Canaveral, Flarida on June 15,

发表于:2019-01-06 / 阅读(220) / 评论(0) 分类 2006年VOA标准英语(六月)

Ancient Mayan Artwork, Calculations Discovered Xultun was the largest city in the ancient Mayan empire in Central America, where, at its height, an estimated 90,000 people lived and worked among pyramids, inscribed monuments, water reservoirs and spo

发表于:2019-01-13 / 阅读(172) / 评论(0) 分类 VOA标准英语2012年(五月)

The U.S. Postal Service is facing financial difficulties as more and more Americans use the Internet to send messages and pay bills. Top officials from the postal service are now asking Congress for permission to stop Saturday delivery as part of eff

发表于:2019-01-13 / 阅读(189) / 评论(0) 分类 VOA标准英语2010年(四)月

RACHEL MARTIN, HOST: The U.S. secretary of state, Rex Tillerson, begins a six-day sweep through East Asia today. It's his first trip to the region as America's top diplomat. And his first stop is Japan. And as NPR's Elise Hu reports, he heads into a

发表于:2019-01-16 / 阅读(157) / 评论(0) 分类 2017年NPR美国国家公共电台3月

ROBERT SIEGEL, HOST: The Flynn guilty plea, the Senate Republican tax bill, the talk of a shakeup at the State Department - those are the developments we're going to discuss now with our Friday political commentators, E.J. Dionne, columnist with The

发表于:2019-01-16 / 阅读(159) / 评论(0) 分类 2017年NPR美国国家公共电台12月

DAVID GREENE, HOST: Maybe you've seen the film Jurassic Park, and you remember that scene where the Tyrannosaurus rex escapes its pen and attacks guests at the theme park. You might remember those imposing teeth. Well, in real life, the T. rex had th

发表于:2019-01-17 / 阅读(167) / 评论(0) 分类 2017年NPR美国国家公共电台5月
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Calor gas
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two frequency method
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