英语视频听力：奥运项目跨栏

Every athlete battles mental barriers. But this Olympian must defeat physical barriers too: all ten of them!

　　Hi, I'm Dr Greg Wells. Hurdlers are incredible multi-taskers. They have to be. Taking off like they've been shot from a cannon¹, they must somehow maintain enough control to soar, smoothly², over barriers about a metre high, in rapid succession.

　　So, how do they pull it off? When most of us run, our femur moves through a small range of motion in the hip³ socket⁴ -and in just one direction. But hurdlers train to move their femurs differently: they have twice the range of motion, and rotate in a circle at the same time!

　　The secret is a special stomach muscle called the psoas. It runs from your thigh⁵ bone, through your stomach, and up your lower back. Hurdlers lengthen⁶ and strengthen their psoas muscle. That lets them whip their trail leg through the entire range of motion with incredible speed.

　　The average person can run 7-10 km/h, but the unique combination of strength and flexibility⁷ enables an Olympic hurdler to hit up to 30! The fusion⁸ of hip motion and muscle recoil⁹... That's how you leap to gold!

　　中文字幕：

　　每位运动员都要克服心理障碍。而这位奥运选手还必须克服实际障碍，共有十个之多。

　　我是维尔斯博士。跨栏选手是神奇的多面手，他们必须做到。他们起跑犹如炮弹，但又必须保持足够控制力，才能顺畅地越过约一米高的障碍物，一个接一个。

　　他们是怎么做到的呢？我们跑步时，大腿的股骨在髋臼内作小幅度的运动，而且只朝一个方向。但跨栏选手股骨的运动有所不同，活动幅度达常人两倍，同时还可以打圆圈。

　　秘密在于腹部一块叫腰肌的特殊肌肉。腰肌从大腿骨经腹部连到下背部。跨栏选手把腰肌练得更长更强，让他们的跟进腿能以惊人速度，跨出大幅度动作。

　　一般人跑速是每小时7到10公里，而奥运跨栏选手结合劲力和灵活度，可以达到时速30公里。髋部运动加上肌肉回弹，就是夺金之道！

 

1 cannon   

n.大炮，火炮；飞机上的机关炮

参考例句：

• The soldiers fired the cannon.士兵们开炮。
• The cannon thundered in the hills.大炮在山间轰鸣。

2 smoothly   

adv.平滑地，顺利地，流利地，流畅地

参考例句：

• The workmen are very cooperative,so the work goes on smoothly.工人们十分合作，所以工作进展顺利。
• Just change one or two words and the sentence will read smoothly.这句话只要动一两个字就顺了。

3 hip   

n.臀部，髋；屋脊

参考例句：

• The thigh bone is connected to the hip bone.股骨连着髋骨。
• The new coats blouse gracefully above the hip line.新外套在臀围线上优美地打着褶皱。

4 socket   

n.窝，穴，孔，插座，插口

参考例句：

• He put the electric plug into the socket.他把电插头插入插座。
• The battery charger plugs into any mains socket.这个电池充电器可以插入任何类型的电源插座。

5 thigh   

n.大腿；股骨

参考例句：

• He is suffering from a strained thigh muscle.他的大腿肌肉拉伤了，疼得很。
• The thigh bone is connected to the hip bone.股骨连着髋骨。

6 lengthen   

vt.使伸长，延长

参考例句：

• He asked the tailor to lengthen his coat.他请裁缝把他的外衣放长些。
• The teacher told her to lengthen her paper out.老师让她把论文加长。

7 flexibility   

n.柔韧性，弹性，（光的）折射性，灵活性

参考例句：

• Her great strength lies in her flexibility.她的优势在于她灵活变通。
• The flexibility of a man's muscles will lessen as he becomes old.人老了肌肉的柔韧性将降低。

8 fusion   

n.溶化；熔解；熔化状态，熔和；熔接

参考例句：

• Brass is formed by the fusion of copper and zinc. 黄铜是通过铜和锌的熔合而成的。
• This alloy is formed by the fusion of two types of metal.这种合金是用两种金属熔合而成的。

9 recoil   

vi.退却，退缩，畏缩

参考例句：

• Most people would recoil at the sight of the snake.许多人看见蛇都会向后退缩。
• Revenge may recoil upon the person who takes it.报复者常会受到报应。