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 Sophie Bushwick. Got a minute?

点击显示原文

隐藏原文=

Cheetahs reign as the fastest land mammals, capable of sprinting at speeds reaching about 65 miles an hour.

点击显示原文

隐藏原文=

But when hunting in the wild, the big cats rarely reach top speed.

点击显示原文

隐藏原文=

Instead they rely on rapid acceleration and agility to catch their prey.

点击显示原文

隐藏原文=

That's according to a study in the journal Nature.

点击显示原文

隐藏原文=

Most previous research examined cheetahs running in a straight line or in a controlled habitat.

点击显示原文

隐藏原文=

To find out how the big cats move in the wild, researchers put tracking collars on five wild cheetahs in Botswana.

点击显示原文

隐藏原文=

Each collar used GPS and other technology to measure each cat's position, velocity, and acceleration.

点击显示原文

隐藏原文=

The collars recorded and uploaded data from 367 hunting runs in a 17-month period.

点击显示原文

隐藏原文=

On these runs, the cheetahs on average topped out at only about half their maximum speed.

点击显示原文

隐藏原文=

The slower pace allowed the cats to quickly decelerate and reaccelerate into fast, tight turns,

点击显示原文

隐藏原文=

the better to avoid getting faked out by prey.

点击显示原文

隐藏原文=

So next time your kitty chases a laser pointer, tell her that maneuverability, not speed, is the key to the kill.

点击显示原文

隐藏原文=

Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.

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

+ 创建收藏夹
保存 取消