含中文字幕节目   

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There's a cross-section of that sort of tower, which is known as a villus. And the villus is lined by cells on the outside that are the fully differentiated cells that play an important...

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The rise of BlackRock. In 25 years, BlackRock has become the world's biggest investor. Is its dominance a problem? ASK conspiracy theorists who they think really runs the world, and they will pr...

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What if the state covered your cost of living, would you still go to work? Go back to school? Not work at all? What would you do? This concept is called a universal basic income or UBI. An...

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The northern state of Minnesota is home to one of the nation's largest and oldest state fairs.It has farm animals,home-made foods, carnival rides and,for the second summer, a Giant Sing Along.Children...

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The World Bank is a technocratic development organisation, not a place for political advocacy. Setting up gay rights as a test of its lending decisions is likely to make the bank less effective at wha...

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Fischetti: So chapter 1 to me seems like it's basically saying, "Hey, we have heavily altered the earth; it no longer works the way it used to. We've still [got to] try to reduce [atmospheric...

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Tracing family trees is a popular British pastime. Television programmes show celebrities rummaging through old census documents. Websites help amateur sleuths track down distant relatives. A new proj...

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Nagy: To me one of the best one[s] occurs by General Putnam at Princeton, New Jersey, again after the battles of Trenton and Princeton. Putnam is there with 50 men, you have the British army ...