yellow-fever mosquito
【昆虫】埃及伊蚊,黄热病伊蚊(Aedes aegypti)

VOA慢速英语20061003b

SCIENCE IN THE NEWS - Six Medical Researchers Who Gave All to Their Work; in Some Cases, Even Their LivesBy Nancy Steinbach and George Grow Broadcast: Tuesday, October 03, 2006 VOICE ONE : This is SCI

发表于:2018-12-07 / 阅读(35) / 评论(0)

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VOA慢速英语 2007 1127b

VOICE ONE : This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) VOICE ONE: At the start of the twentieth century, the United States Army had a

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Six Researchers Who Gave All to Their Work BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. Im Bob Doughty. FAITH LAPIDUS: And Im Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) BOB DOUGHTY: At the start of the

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2011年VOA慢速英语(六)月

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SCIENCE IN THE NEWS - Six Researchers Who Gave All to Their Work BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Doughty. FAITH LAPIDUS: And I'm Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) BOB DOUGH

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发表于:2019-01-12 / 阅读(65) / 评论(0)

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aqueduct of vestibule