关注微信领¥50

百门课程¥0元


50万+已关注

科学美国人60秒:美国政府拟用无人机发射疫苗保护濒危雪貂-

2016-11-22 14:22:45来源:科学美国人60秒

点击查看>>科学美国人60秒音频:美国政府拟用无人机发射疫苗保护濒危雪貂

  科学美国人60秒中英文翻译:美国政府拟用无人机发射疫苗保护濒危雪貂

  科学美国人60秒英文文本

  This is Scientific American — 60-Second Science. I'm Steve Mirsky.

  Got a minute?

  A recent headline on the Web site theverge.com got a lot of attention on social media. Because each new phrase seemed to take the message in an unexpected direction. The headline read: U.S. government plans to use drones to fire vaccine-laced M&Ms near endangered ferrets.

  Some background. Black-footed ferrets have been on the endangered species list since 1967. Only about 300 were known to be alive in the wild at the end of 2015. They tend to live in the Great Plains and the West. Because they love to eat prairie dogs, which tend to live in the Great Plains and the West. Unfortunately, prairie dogs often harbor fleas, and fleas can carry the plague. Yup, that plague, the so-called Black Death that killed millions in Europe in the 14th century.

  So ferrets suffer when fleas cause a plague outbreak in prairie dogs, either because the ferrets also catch the disease or because the prairie dogs die and the ferrets go hungry. Officials have tried vaccinating individual ferrets and they've tried treating prairie-dog burrows with flea-killer. But neither method is particularly efficient.

  And so the U.S. Fish and Wildlife Service is preparing a study for September in the UL Bend National Wildlife Refuge in Montana. The viral headline was incorrect about the M&Ms, but otherwise, yes, aerial drones will shoot vaccine-laced pellets designed to be irresistible to prairie dogs. The drone delivery system should quickly spread the vaccine-carrying goodies over a wide area so that lots of prairie dogs gobble them up—thus making the prairie dogs available to be gobbled up, safely, by the endangered ferrets.

  And so everybody wins. Except for the prairie dogs that get eaten. And the Yersinia pestis bacteria that cause plague. Well, that's it for me, I've droned on long enough.

  Thanks for listening for Scientific American — 60-Second Science Science. I'm Steve Mirsky.

  中文翻译请点击下一页

为你特别匹配的托福超值课程,快速提分先人一步!
  • 新东方托福1月公益课(第1期)

    新东方托福1月公益课(第1期)

    特点1天1节公益课,给2019来点托福备考新鲜货!

    课时:10小时

    查看详情
  • 【活动价】新东方托福名师在线一对一(体验课)

    【活动价】新东方托福名师在线一对一(体验课)

    适合人群:想体验新东方在线致赢托福1对1辅导冲分课程的同学

    体验课时:30分钟

    查看详情
  • 大学生旗舰直达班 (冲110分)

    【知心托福】大学生旗舰直达班 (冲110分)

    适合人群:托福目标分数110分!

    课时:343

    查看详情
  • 大学生旗舰直达班 (冲100分)

    【知心托福】大学生旗舰直达班 (冲110分)

    适合人群:托福目标分数100分!

    课时:331

    查看详情
  • 大学生旗舰直达班 (冲90分)

    【知心托福】大学生旗舰直达班 (冲90分)

    适合人群:托福目标分数90分!

    课时:310

    查看详情
全部课程>>
单项突破
直播课堂

更多托福课程
新东方25年教学经验沉淀
托福考生必修课
托福考生,高效提分,安心之选

查看详情>>
更多>>
更多课程>>
更多>>
更多内容
更多>>
更多公开课>>
更多>>
更多课程>>