单词：Welander's ulcer
单词：Welander's ulcer 相关文章
VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember with EXPLORATIONS in VOA Special English. Today we tell about the flights that followed Apollo Eleven to the moon. (MUSIC) VOICE ONE: The summer of nineteen sixty-nine was a special tim
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EXPLORATIONS - Apollo's Final Missions: The Last Footsteps on the Moon SHIRLEY GRIFFITH: I'm Shirley Griffith. STEVE EMBER: And I'm Steve Ember with EXPLORATIONS in VOA Special English. Today we tell about the flights that followed Apollo Eleven to t
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4.常见疾病名称 Internal Medicine 内科 Acidosis 酸中毒 Adams-Stokes syndrome 亚－斯氏综合症 alcoholism, alcoholic intoxication 酒精中毒 alkalosis 碱中毒 anaphylaxis 过敏症 anemia 贫血 iron deficiency anemia 缺铁性贫血
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Friday is Moon Day, which commemorates the first human landing on the Moon on July 20, 1969. To mark the occasion, let's take a look at China's lunar exploration program. The Chang'e program China's lunar exploration program started in 2004. It is na
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RACHEL MARTIN, HOST: There's a new probe in orbit around the moon. And sometime earlier in this new year, it's expected to land on the Moon's far side, the side we never see from Earth. It is a Chinese probe. And as NPR's Joe Palca explains, although
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