句间停顿:
  • 1S
  • 3S
  • 5S
语速: x 1.0
  • 速度0.8X
  • 速度1.0X
  • 速度1.2X
  • 速度1.5X
  • 速度1.8X
  • 速度2X
始终显示原文
欢迎使用 KMF 精听精研
坚持练习精听,反复听、吃透每个句子,能够快速 提升听力能力
开始精听
或按 「 空格」开始播放

段落1

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

点击显示原文

隐藏原文=

"Noise can prevent an animal from hearing other important sounds."

点击显示原文

隐藏原文=

Rachel Buxton, a conservation biologist at Colorado State University.

点击显示原文

隐藏原文=

Buxton and colleagues wanted to see, or rather hear, whether sounds made by human activity-called anthropogenic sound, think airplanes, highway traffic, heavy machinery-were significant in protected areas around the country.

点击显示原文

隐藏原文=

"Park Service engineers on our team used over a million hours of acoustic measurements taken from 492 sites around the contiguous United States.

点击显示原文

隐藏原文=

And they built a sound model...so to get at an idea of noise pollution, we used two thresholds: where anthropogenic noise raises sound levels three and 10 decibels above natural."

点击显示原文

隐藏原文=

Which translates to a doubling and 10-times increase in sound levels.

点击显示原文

隐藏原文=

Buxton and her team determined that humans were responsible for doubling the sound in 63 percent of protected areas.

点击显示原文

隐藏原文=

And we raise the natural sound levels by 10 times in 21 percent of such landscapes.

点击显示原文

隐藏原文=

"These levels are known to impact both the human experience in national parks and have a range of repercussions for wildlife...

点击显示原文

隐藏原文=

so animals use sounds for many essential life functions, such as predator avoidance, navigation, finding food, mate attraction and maintenance of social groups.

点击显示原文

隐藏原文=

So not being able to hear these sounds has serious consequences."

点击显示原文

隐藏原文=

The study is in the journal Science, which also provided the audio of Buxton.

点击显示原文

隐藏原文=

"The challenge here is managing noise sources that are coming from outside the protected area...

点击显示原文

隐藏原文=

however, our paper provides some really valuable information and options for managing noise and also enhancing opportunities to enjoy natural quiet."

点击显示原文

隐藏原文=

Because it's not just the non-human residents of wilderness areas that need some peace and quiet.

点击显示原文

隐藏原文=

For Scientific American 60-Second Science. I'm Steve Mirsky.

点击显示原文

隐藏原文=
[ < 空格 > ]
当前句 /
/
  • 段落1
  • 第 1 句
  • 第 2 句
  • 第 3 句
  • 第 4 句
  • 第 5 句
  • 第 6 句
  • 第 7 句
  • 第 8 句
  • 第 9 句
  • 第 10 句
  • 第 11 句
  • 第 12 句
  • 第 13 句
  • 第 14 句
  • 第 15 句
  • 第 16 句
  • 第 17 句

+ 创建收藏夹
保存 取消