课程咨询
托福培训

扫码免费领资料

内含托福全科备考资料

更有免费水平测试及备考规划

托福培训

扫码关注掌握一手留学资讯

回复XDF免费水平测试

科学美国人60秒:全球荒野面积减少-托福听力下载

2016-11-18 15:38:17来源:网络

点击查看>>科学美国人60秒音频:全球荒野面积减少

  科学美国人60秒中英文翻译:全球荒野面积减少

  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?

  Only about 23 percent of the world's land area is still what you'd call wilderness—where indigenous people, wildlife, plants and microbes get a chance to live with little or no disturbance from large human populations. But even that current figure of 23 percent is down by a tenth in just the last couple of decades. Which translates into an area the size of Alaska being converted away from wilderness since the 1990s. That's according to a study in the journal Current Biology that was also announced at the just completed Honolulu meeting of the International Union for Conservation of Nature.

  The research found that the regions that suffered the biggest wilderness losses were South America and Central Africa. South America lost almost a third of its wilderness while Africa's is down about 14 percent.

  James Watson is the lead author of the study. He's with the Wildlife Conservation Society and the University of Queensland—he's no relation to the more famous DNA double helix James Watson.

  In the journal article he and his colleagues write: "The continued loss of wilderness areas is a globally significant problem with largely irreversible outcomes for both humans and nature: if these trends continue, there could be no globally significant wilderness areas left in less than a century. Proactively protecting the world's last wilderness areas is a cost-effective conservation investment and our best prospect for ensuring that intact ecosystems and large-scale ecological and evolutionary processes persist for the benefit of future generations." And future generations includes both the organisms in the remaining wilderness—and us.

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

  中文翻译请点击下一页

托福辅导

关注新东方在线托福

托福机经·Official题目练习

考前重点突破·听说读写海量资料

更多资料
更多>>
更多内容

免费获取托福备考大礼包

微信扫描下方二维码 立即领取

托福辅导
更多>>
更多公益讲座>>
更多>>
更多资料