单词：spectrum component
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I want to speak to the American people again today because some of this primary information that has surfaced in the last twenty-four hours raises some serious concerns. Its been widely reported that the father of the suspect in the Christmas inciden
美联社新闻一分钟2009年(十二)月
On June 20th, we observe World Refugee Day. It is an occasion to highlight the plight of refugees around the world, commend their resilience, and express gratitude to their hosts. 6月20日，我们纪念世界难民日。在这一天，我们着重强
VOA标准英语2017年(6月)
James Webb Space Telescope Progresses Toward Launch WASHINGTON While the space community is looking back this week to celebrate the 25th anniversary of the launch of the Hubble Space Telescope, workers in an airtight cleanroom at Goddard Space Flight
VOA标准英语2015年(四月)
Fade - This is a reduction in the received signal. It is caused by absorption, refraction, or reflection. Fax - This is a shortening of Facsimile, and it refers to one fax machine sending a digital re
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Some call it the hormone of love. Its oxytocin and it helps moms bond with and breast-feed their babies, and even keeps romantic couples content. Now a study suggests that this same hormone might also help people with autismby improving their social
Scientific American(二)月
Remarks by the President on Immigration Reform 奥巴马总统就移民改革问题发表讲话 East Room 东厅 October 24, 2013 2013年10月24日 THE PRESIDENT: Thank you very much. Please have a seat, everybody. Good morning, and welcome to the Wh
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