单词：acoustical imaging by Bragg diffraction
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By Melinda Smith Washington 30 March 2007 Since the mid-20th century the World Health Organization reports there has been an increase in the rate of breast cancer among women in developed countries. For decades, doctors have urged their patients to d
2007年VOA标准英语（三月）
US Presidential Candidates Woo Iowa Voters Ahead of Key Vote Just a week before the Iowa caucuses, which mark the beginning of the U.S. presidential election process, both Republican and Democratic candidates are rallying for voter support in the sta
VOA标准英语2016年(一月)
This is Scientific American's 60-second Science. I'm Steve Mirsky. Got a minute? Can you name those notes? Probably not. Perhaps one in ten thousand speakers of European languages has perfect pitch - the ability to recognize a note without having hea
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This is Scientific American's 60-second Science. I'm Karen Hopkin. If you ever got picked on in the schoolyard, you might have wished for some sort of superpower, like unbeatable speed or maybe just the ability to completely disappear. Now scientists
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But he would not admit failure. 但是李将军不会认输。 Led by Pickett of Virginia, thirteen thousand men charged across the valley between the two armies directly at the Union center. 在弗吉尼亚人皮科特的带领下，1.3万士兵越过
美国学生历史
But Bragg was now greatly strengthened by soldiers from the Mississippi and by Longstreet's division from Lee's army in Virginia. 但是，此时的布拉格得到来自密西西比士兵的补充，也得到朗斯特里特从弗吉尼亚李将军那里
美国学生历史
SCOTT SIMON, HOST: Millions of Americans recharge their phones and screens and laptops before they go to bed at night, but do they recharge themselves? Arianna Huffington says we're in the midst of a sleep deprivation crisis that creates anxiety as w
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中文 英文 缩写 不利状态 adverse slate 不连续发送 Discontinuous Transmission DTX 不良磁道 bad track 不良分页 bad page break 不良信息 flame 不良信息饵 flame bait 不良信息
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1. Coastal fog has brought hope of relief to firefighters battling Northern California's wildfires. More than 1,400 fires are still burning in that state. The fires were mostly started by lightning storms but quickly spread because of dry conditions
美联社新闻一分钟2008年(七)月
Good evening, everyone. We are coming to you from Oak Creek, Wisconsin, again tonight. There are significant new developments to tell you about in the wake of Sunday's shooting at the Sikh Temple. There is also here in Oak Creek a quiet, ongoing effo
CNN2012年(八)月
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Every year, scores of manatees are killed by boats in Floridas waters. Their plight is an ecological concern. And everyone from marine biologists to Marg
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This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. Hybrid cars are good for the environment, but scientists say that they might be bad for pedestrians. Because hybrids are so quiet that can be hard for wa
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We humans are pretty good at communicating with sounds other than words. But how much of this is hard-wired, and how much do we pick up from others? To find out, researchers recorded the nonverbal sounds of people born deaf, as they responded to a ra
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Blue whales off the California coast make calls that, sped up 10 times, sound like (sound of two-part call). The original is a wall-rattling frequency too low for us to hear. Scientists analyzed around 2,500 of those calls, and found that the second
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By Cindy Saine Washington, DC 05 July 2006 watch report Bush Troops President Bush spent part of his Independence Day holiday delivering a speech to U.S. troops at Fort Bragg, North Carolina. He thanked them for their courage, and said terrorists ar
2006年VOA标准英语（七月）
Country Music Ladies Put Men in Their Place American country music lyrics often describe women as they might appear in mens dreams. This is especially true of songs by many male artists. But the songs by Maddie Marlow and Tae Dye are different. The t
2015年VOA慢速英语(九)月
The next morning Grant attacked in his turn and slowly but surely pushed the Confederates off the field. 第二天早晨他反攻南方军，当然，他击退了南方军。 Halleck then united Grant's, Buell's, and Pope's armies and captured Corint
美国学生历史
Books and Arts; Book Review; Culture on television; The cruellest cut; 文艺；书评；电视上的艺术；最粗鲁的裁汰； The South Bank Show: Final Cut. By Melvyn Bragg. 《南岸秀：最终裁汰》Melvyn Bragg著。 The South Bank Show
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By Chris Mitchell Washington, DC 06 April 2006 watch Medical Imaging report Medical experts have defended medical imaging as a way to improve health care, during a briefing at the U.S. Capitol buildin
2006年VOA标准英语（四月）
通知与确认 Acknowledgments Confirmations 通知对方接到来信Acknowledging receipt of letters1. Dear Mr/Ms,Thank you for your letter No. A-3 of 6th May, offeringus 6 UI-4 Viewdatas. We have passed it on to ourTechnical Department for their c
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