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蒋健棠听说学英语 Chapter16:The wildlife biologist

发表于:2018-12-26 / 阅读(87) / 评论(0)

蒋健棠听说学英语

Designer Antibiotics

85 新功效的抗生素在加州诞生 DATE=8-15-01 TITLE=SCIENCE REPORT - Designer Antibiotics BYLINE=Jerilyn Watson （Start at 1'04

发表于:2019-01-02 / 阅读(105) / 评论(0)

科技之光

Biosolids

By Mario Ritter Broadcast: October 28, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Farmers have long put animal waste on their fields. They may also use human waste. Mode

发表于:2019-01-02 / 阅读(73) / 评论(0)

VOA2003（下）-农业与经济

VOA标准英语2013--US Researchers Hope to Increase Availability of Donor Lungs

US Researchers Hope to Increase Availability of Donor Lungs WASHINGTON U.S. scientists are conducting a study that they hope will increase the number of donor lungs available to patients needing transplants. Their effort is aimed at finding the best

发表于:2019-01-03 / 阅读(34) / 评论(0)

VOA常速英语2013年(十一月)

美国国家公共电台 NPR Is All That Wildfire Smoke Damaging My Lungs?

MARY LOUISE KELLY, HOST: Right now in Your Health, we'll examine a different natural phenomenon that's engulfing the northwest of the country. That would be forest fires. It's an unusually bad wildfire season, and for weeks people have been breathing

发表于:2019-01-16 / 阅读(41) / 评论(0)

2017年NPR美国国家公共电台9月

60秒科学:Resuscitating Lungs for Transplant

Resuscitating Lungs for Transplant A study in the journal Science Translational Medicine details a new procedure for making damaged, donated lungs functional, potentially doubling the number of lungs available for transplant. Cynthia Graber reports E

发表于:2019-01-30 / 阅读(151) / 评论(0)

60秒科学

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