单词：printed rotor
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[00:00.00]MODULE 4Great inventions [00:03.69]模块四伟大的发明 [00:07.38]Unit 1Paper and printing havebeen used for ages. [00:10.07]第一单元纸和印刷术的应用已很长时间了 [00:12.75]Listening and vocabulary2 Listen and check the
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By Jim Fry Washington 03 May 2007 Marine Osprey The U.S. Marines are preparing to send a new tilt rotor aircraft into combat for the first time. And the American manufacturer predicts a civilian version may soon appear over many of the world's citie
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1. The man accused of kidnapping two young boys has pleaded not guilty in one of the cases. Michael Devlin went before a judge this morning in the case of Ben Ownby. Meantime, the parents of Shawn Hornbeck, the other teen he's accused of kidnapping,
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SCOTT SIMON, HOST: Three-D printers are being used these days to make all kinds of things - jewelry, artwork, or even guns. Now, scientists have used a 3-D printer to create a functioning mouse ovary. Yes. NPR's Rob Stein explains. ROB STEIN, BYLINE:
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