反馈建议 切换旧版 去做题 结束训练
全文精听 逐句精听
句间停顿： 关
  • 关
  • 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 Earth. I'm David Biello. Your minute begins now.

点击显示原文

隐藏原文=

A cloudy day can really dim the promise of solar energy.

点击显示原文

隐藏原文=

But out in orbit, a collector could constantly harvest the sun's photons.

点击显示原文

隐藏原文=

That's the idea being explored at the U.S.Naval Research Laboratory.

点击显示原文

隐藏原文=

And they have a prototype.

点击显示原文

隐藏原文=

One side of the experimental module is covered in a photovoltaic panel that converts sunlight into electricity.

点击显示原文

隐藏原文=

In the middle sit electronic circuits that convert the electricity to radio waves.

点击显示原文

隐藏原文=

The other side has an antenna to beam the energy down to Earth, where it's converted back to electricity.

点击显示原文

隐藏原文=

The Navy module works well in a vacuum chamber that mimics the empty cold of space.

点击显示原文

隐藏原文=

In the test set-up, high-powered xenon lamps stand in for concentrated sunlight.

点击显示原文

隐藏原文=

Of course, getting a working instrument into space is an expensive proposition.

点击显示原文

隐藏原文=

To cut costs, an orbiting solar array would probably have to be assembled in space, mostly likely by robots that don't even exist yet.

点击显示原文

隐藏原文=

And some people have qualms about concentrated radio frequency or microwave beams cutting down through the atmosphere to ground-based receivers.

点击显示原文

隐藏原文=

But given the persistence of this idea, and the desperate need for clean energy, maybe space-based solar will have its day in the sun.

点击显示原文

隐藏原文=

Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.

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

+ 创建收藏夹
保存 取消