单词：semiconductor junction lasers
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FAITH LAPIDUS: This is SCIENCE IN THE NEWS in VOA Special English. Im Faith Lapidus. BOB DOUGHTY: And Im Bob Doughty. Today, we will tell about a new cancer treatment and a study of the disease malaria. We will tell about the possibility of drier con
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There Paul Jobs could tinker with cars and his son with electronics. 在车库里，保罗乔布斯可以修汽车，而他儿子可以玩他的电子设备。 Its other significant attribute was that it was just over the line inside what was then th
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[00:06.37]The United States has a new official clock. [00:10.95]The clock began operating late last year in the American city of Boulder,Colorado. [00:18.39]Experts say the new clock is so exact that it will neither gain nor lose so much as one secon
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STEVE EMBER: Im Steve Ember. FAITH LAPIDUS: And Im Faith Lapidus with EXPLORATIONS in VOA Special English. This week, we tell about one of the most recognizable objects in science fiction the laser. And we tell how the laser has made its mark in the
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LULU GARCIA-NAVARRO, HOST: Forget about scarecrows. Some farmers are using laser beams to shoot thieving birds from their fields. From the berry fields of Oregon, Tom Banse of the Northwest News Network brings us this report. TOM BANSE: Blueberry and
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