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!
  • 【留学TED】丢掉困扰,留学生活就该丰富多彩

    丢掉困扰,留学生活就该丰富多彩

    适合人群:留学党

    课时:1小时

    查看详情
  • 阅读营 – 扫清托福阅读长难句4大障碍

    阅读营 – 扫清托福阅读长难句4大障碍

    适合人群:备考托福阅读,攻克长难句的考生!

    课时:4小时

    查看详情
  • 1小时讲透托福(第2季:重难点解析)

    1小时讲透托福(第2季:重难点解析)

    适合人群:托福备考小白

    课时:4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
  • "美国大学直达号”系列公开课

    课程特点:留学考试专家与17位申请规划大咖带你直达梦校

    课时:8小时

    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>>

TOEFL 20天扫清托福阅读长难句4大障碍

4天直播技巧讲解16天社群打卡学习

每周一小时直播,半小时答疑,4天12句长难句练习讲解,助你搞定托福长难句。 活动日期 : 2018.09.27-2018.10.31

价格 : ¥免费

675人 已报名

查看详情
更多>>
更多公开课>>
更多>>
更多课程>>