单词：photoemission electron microscope (peem)
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By Jeri Watson and Caty Weaver Broadcast: December 26, 2004 (MUSIC) VOICE ONE: Im Steve Ember. VOICE TWO: And Im Faith Lapidus with People in America in VOA Special English. Today we tell about five special people who died during the past year. We st
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iPhone Becomes Low Cost Microscope The Apple iPhone can be used for lot of things making calls, playing games and sending pictures, video and text. Scientists say it also can be converted into a low-cost microscope to detect worm-related infections i
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天文学 astronomy 天文学 astronomical 天文的 astronomical observatory 天文台 astronomer 天文学家 astrophysics 天文物理学 astrology 占星学 pseudoscience 伪科学 cosmos(universe) 宇宙 cosmology 宇宙学 infinite 无限的 co
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EXPLORATIONS - From a Photo of War, a Statue to Remember MARIO RITTER: Welcome to the VOA Special English program EXPLORATIONS. Im Mario Ritter. July fourth, Independence Day in the United States, is a time of celebration. Friends and family across t
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The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen
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台湾籍旅美老师今天交给我们的句子是： Blood is the tissue that not only carries cells that transport oxygen, for example, the red blood cells, or fights infectious diseases, but it also carries messenger molecules, hormone-like facto
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