High Dive[理工类职称英语教材]
Cheryl Sterns aims to go boldly where no human has ever gone before in a balloon：40 kilometers up into the atmosphere. 1 No one has ever leapt from such a height or gone supersonic1without an airplane or a spacecraft.Yet Sterns,an airline pilot,is not the only person who wants to be the first to accomplish those feats.Two other brave people,an Australian man and a Frenchman,are also planning to make similar leaps.
2 .First,she’11 climb into a cabin hanging from a balloon the size of a football field2.Then the balloon will take her high into the stratosphere—the layer of Earth’s atmosphere 12 to 50 kilometers above the planet.“The ascent will take two and a half to three hours,”said Sterns.“I’ll be wearing a fully pressurized, temperature-controlled space suit.”
At 40 kilometers,Sterns will be able to see the gentle curve of Earth and the blackness of space over head.Then she’11 unclip herself from the cabin and dive headfirst,like a bullet,into the atmosphere . 3
For high dive,astronaut escape suits are a key to success.Current pilot and astronaut escape suits are guaranteed only a maximum altitude of 21 kilometers.Del Rosso,a NASA engineer of spacesuits and life-support systems,said the suit designed for Stern’s jump could serve as a model for the lethal environment of higher climbs. 4 The first hazard is oxygen-deficient air.Any person without an additional oxygen supply at 40 kilometers would die within three to five seconds.The second hazard is low atmospheric pressure.Atmospheric pressure is much lower at high altitudes than it is at sea level.The low atmospheric pressure of the upper stratosphere causes the gases in body fluids to fizz out of solution like soda bubbles.
5 .Other hazards include temperatures as low as-55 degrees Celsius,flying debris,and solar radiation.
For Sterns to survive,her spacesuit will have to protect her from all of these hazards.“A spacesuit is like a one-person spaceship,”Del Rosso explained.“You have to take everything you need in a package that’s light enough,mobile enough,and tough enough to do me job.You can’t exist without it.”
词汇：
feat n.技艺的表演 stratosphere n.同温层
ascent n.上升 pressurize 证加压,增压
lethal adj.致死的 deficient adj.缺乏的,不足的
fizz v.嘶撕响 debris n.碎片
注释：
1. gone supersonic：相当于gone at supersonic speed。
“go+adj.”是个常用结构,如：go mad,go free,go electric等。
2. First,she’11 climb into a cabin hanging from a balloon the size of a football field：首先,她进入吊在一个有足球场那么大的气球的座舱里。
the size of a football field是名词短语,用作定语,修饰balloon。
练习：
A. It will handle several major hazards.
B. Escape suits are tough |
