老托福听力30篇翻译三.doc

老托福听力30篇翻译三 人类对于外太空的好奇感实在是太强了，那么在外太空生存可是我们需要挑战的最大的问题，今天小编就为大家讲解一下生存的基本方面：太空衣。 　　Thank you. Its great to see so many of you interested in this series on Survival in Outer Space. Please excuse the cameras; were being videotaped for the local TV stations. Tonight Im going to talk about the most basic aspect of survival—the space suit. When most of you imagine an astronaut, thats probably the first thing that comes to mind, right? Well, without space suits, it would not be possible for us to survive in space. For example, outer space is a vacuum—theres no gravity or air pressure; without protection, a body would explode. Whats more, wed cook in the sun or freeze in the shade with temperatures ranging from a toasty 300 degrees above to a cool 300 degrees below zero Fahrenheit. The space suit that NASA has developed is truly a marvel. This photo enlargement here is a life-size image of an actual space suit worn by astronauts on the last space shuttle mission. This part is the torso. It’s made of seven extremely durable layers. This thick insulation protects against temperature extremes and radiation. Next is what they call a bladder of oxygen thats an inflatable sac, filled with oxygen, to simulate atmospheric pressure. This bladder presses against the body with the same force as the Earths atmosphere at sea level. The innermost layers provide liquid cooling and ventilation. Despite all the layers, the suit is flexible, allowing free movement so we can work. Another really sophisticated part of the space suit is the helmet. I brought one along to show you. Can I have a volunteer come and demonstrate? 　　谢谢。看到你们这么多人都对“外太空生存”感兴趣真好。请不要介意摄像机，我们在给当地的电视台录像。今晚我要讲一讲在外太空生存的最基本的方面——太空衣。当你们大部分人想象到一个宇航员时，太空衣是最先在脑海中出现的，对不对?没有太空衣，我们就不可能在外太空生存。比如说，外太空就像一个真空——那里没有重力或者空气压力。没有保护，身体会爆炸。而且，在温度从暖烘烘的300华氏度到冰冷的零下300华氏度的变化下，我们会在太阳里被烤熟或者在背阴处冻结。NASA研制的太空服是一个真正的十分灵巧的东西。这个放大的照片是一个和实物一样大小的图像，反映的是在上一次航天飞机的任务中，宇航员穿着真正的太空衣。这个部分是身体躯干。它是由7个非常耐用的层制作的。粗的绝缘材料保护温度末端和辐射。下一个是他们叫做氧气“囊”的充气囊。它里面充满了氧气，模仿大气压力。这个囊对身体