【英语时差8,16】高端运动装备

The crowd goes wild, the cyclist crosses the finish line---And it's a new world record!   Today's athletes are constantly breaking the limits of what was once possible. On today's Moment of Science?, we'll learn how high performance athletes get a boost from high technology.

In some sports, the advantages of better technology are pretty obvious. Competing cyclists can spend up to ninety percent of their energy overcoming air resistance. Anything that reduces this drag can add directly to their speed. Therefore, today's competition bikes are engineered to be as streamlined as possible, with blade-like spokes¹, tapered² tubing, and handlebars that sweep low and forward for the most aerodynamic riding posture³.

Even lower tech sports benefit from high technology. Forty years ago, a pole vaulting⁵ pole was a bamboo shaft⁶, and the world record vault⁴ stood at fifteen feet. Today, poles are made of carbon composite--custom built to the individual's speed, weight, and grip--and top-class vaulters can now clear twenty feet. Archery bows are also no longer made of wood. They have a core of miniature glass ball bearings, buried in rigid⁷ foam⁸ and wrapped in carbon fiber⁹ and fiberglass. Switching to the new bows made archers¹⁰ instantly more accurate, improving scores by more than twenty percent.

Sometimes however, this high tech engineering can go too far. Ten years ago, a sports rules committee banned a new, ultra-aerodynamic javelin¹¹ design. This new javelin had the unfortunate habit of overshooting the field entirely¹², and winding¹³ up in the stands. After it was banned, the javelin record dropped by over sixty-five feet.

On our next program, we'll learn how high technology can benefit athletic¹⁴ training, as well as equipment.  

1 spokes   

n.（车轮的）辐条( spoke的名词复数 )；轮辐；破坏某人的计划；阻挠某人的行动

参考例句：

• Her baby caught his fingers in the spokes of the pram wheel. 她宝宝的手指被婴儿车轮的辐条卡住了。 来自辞典例句
• The new edges are called the spokes of the wheel. 新的边称为轮的辐。 来自辞典例句

2 tapered   

adj. 锥形的，尖削的，楔形的，渐缩的，斜的 动词taper的过去式和过去分词

参考例句：

• The tail tapered to a rounded tip. 尾部越来越细，最后成了个圆尖。
• The organization tapered off in about half a year. 那个组织大约半年内就逐渐消失了。

3 posture   

n.姿势，姿态，心态，态度；v.作出某种姿势

参考例句：

• The government adopted an uncompromising posture on the issue of independence.政府在独立这一问题上采取了毫不妥协的态度。
• He tore off his coat and assumed a fighting posture.他脱掉上衣，摆出一副打架的架势。

4 vault   

n.拱形圆顶，地窖，地下室

参考例句：

• The vault of this cathedral is very high.这座天主教堂的拱顶非常高。
• The old patrician was buried in the family vault.这位老贵族埋在家族的墓地里。

5 vaulting   

n.（天花板或屋顶的）拱形结构

参考例句：

• The vaulting horse is a difficult piece of apparatus to master. 鞍马是很难掌握的器械。
• Sallie won the pole vaulting. 莎莉撑杆跳获胜。

6 shaft   

n.(工具的)柄，杆状物

参考例句：

• He was wounded by a shaft.他被箭击中受伤。
• This is the shaft of a steam engine.这是一个蒸汽机主轴。

7 rigid   

adj.严格的，死板的；刚硬的，僵硬的

参考例句：

• She became as rigid as adamant.她变得如顽石般的固执。
• The examination was so rigid that nearly all aspirants were ruled out.考试很严，几乎所有的考生都被淘汰了。

8 foam   

v./n.泡沫，起泡沫

参考例句：

• The glass of beer was mostly foam.这杯啤酒大部分是泡沫。
• The surface of the water is full of foam.水面都是泡沫。

9 fiber   

n.纤维，纤维质

参考例句：

• The basic structural unit of yarn is the fiber.纤维是纱的基本结构单元。
• The material must be free of fiber clumps.这种材料必须无纤维块。

10 archers   

n.弓箭手，射箭运动员( archer的名词复数 )

参考例句：

• The next evening old Mr. Sillerton Jackson came to dine with the Archers. 第二天晚上，西勒顿？杰克逊老先生来和阿切尔家人一起吃饭。 来自辞典例句
• Week of Archer: Double growth for Archers and Marksmen. 射手周：弓箭手与弩手（人类）产量加倍。 来自互联网

11 javelin   

n.标枪，投枪

参考例句：

• She achieved a throw of sixty metres in the javelin event.在掷标枪项目中，她掷了60米远。
• The coach taught us how to launch a javelin.教练教我们投标枪。

12 entirely   

ad.全部地，完整地；完全地，彻底地

参考例句：

• The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
• His life was entirely given up to the educational work. 他的一生统统献给了教育工作。

13 winding   

n.绕，缠，绕组，线圈

参考例句：

• A winding lane led down towards the river.一条弯弯曲曲的小路通向河边。
• The winding trail caused us to lose our orientation.迂回曲折的小道使我们迷失了方向。

14 athletic   

adj.擅长运动的，强健的；活跃的，体格健壮的

参考例句：

• This area has been marked off for athletic practice.这块地方被划出来供体育训练之用。
• He is an athletic star.他是一个运动明星。