听力文本

Big loop. Elbow up.
手挥大圈 胳膊抬高
Ready? Now! Go! Stop!
好了？扔！推！ 停一下！
Upon my brothers request, father built us a seesaw.
在弟弟的要求下 父亲为我们搭了个跷跷板
Slow down! Come on, cowboy.
慢点儿！ 是这么骑，小牛仔
My father loved Layton more than anything in the world.
我爸爸爱雷顿胜过世上的一切
Good deal.
真不错
I would have liked to be a daredevil, too. But I knew I never be upto it.
虽然我也向往成为那样的超胆侠 但我知道我永远做不到
Orffyreus have five marbles trapped in tubes, creating an imbalance.
奥菲亚设计了五滚珠管道模型以建立失衡系统
This rocking motion, however, caused the energy to dissipate.
但其中的摆动引起了能量的迅速减少
Robert Flux built a mill based on the concept of perpetual rotation.
罗贝尔·弗拉克基于永动轮转概念建造了一座磨碎机
However the inherit friction of the machine caused significant loss of energy.
但机器的固有摩擦造成了能量的大量耗损
Italian philosopher Marco Zimara imagined a machine that could recycle the wind.
意大利哲学家马可·泽马拉设计了一种回收风力的机器
But the force required to compress the bellows was greater than the energy produced by the windmill.
但压缩风箱需要的力却超过了风力产生的能量
So it didn't work.
所以无法实现

重点讲解

loop(绳、电线等的)环,圈:
He tied a loop of rope around his arm.
他在手臂上用绳子系了一个圈。
Make a loop in the string.
在绳子上打个圈。

trap sth收集；吸收:
Solar panels trap energy from the sun.
太阳能电池板吸收太阳能。

dissipate(使)消散,消失；驱散:
Eventually, his anger dissipated.
他的愤怒终于平息了。
Her laughter soon dissipated the tension in the air.
她的笑声很快消除了紧张气氛。

perpetual不间断的；持续的；长久的
the perpetual noise of traffic
持续不断的交通噪声
We lived for years in a perpetual state of fear.
多年来我们一直生活在恐惧中。

recycle sth回收利用；再利用:
Denmark recycles nearly 85% of its paper.
丹麦的纸张回收率达 85%。

compress (sth) (into sth)(被)压紧,压缩:
Her lips compressed into a thin line.
她的双唇抿成了一道缝。

视频及简介
讲述了一位美国少年因获得世界科学大奖被邀请到华盛顿演讲，独自穿越美国的故事。