播放一次
- 播放一次
- 播放三次
- 循环播放
正常语速
- 0.8倍语速
- 正常语速
- 1.2倍语速
- 1.5倍语速
- 1.8倍语速
-
1
Thank you. It's great to see so many of you interested in this series on "Survival in Outer Space."
谢谢。见到你们这么多人对“生存在外层空间”这个系列感兴趣真是太棒了。
-
2
Please excuse the cameras, we're being videotaped for the local TV stations.
请原谅这些摄像机，我们正在为地方电视台录像。
-
3
Tonight I'm going to talk about the most basic aspect of survival—the space suit.
今晚我将要谈论关于最基本的生存方面——宇航服。
-
4
When most of you imagine an astronaut, that's probably the first thing that comes to mind, right?
当你们中的大多数人想象一个宇航员的时候，那个可能是脑子里首先要想到的，对吗？
-
5
Well, without space suits, it would not be possible for us to survive in space.
好，没有宇航服，对我们来说生存在太空中是不可能的。
-
6
For example, outer space is a vacuum—there's no gravity or air pressure; without protection, a body would explode.
举例来说，外层空间是一个真空空间——没有重力和气压；没有防护的话，人体将会爆炸。
-
7
What's more, we'd 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.
更重要的是，从酷热的零上300华氏度到冰冷的零下300华氏度的温度范围里，我们会在阳关下被烤熟或者在阴影下被冰封。
-
8
The space suit that NASA has developed is truly a marvel.
NASA研制出的的宇航服真是个奇迹。
-
9
This photo enlargement here is a life-size image of an actual space suit worn by astronauts on the last space shuttle mission.
这张放大的照片是个与实物大小一样的，一件真正的被宇航员在最近一次航天飞机任务中穿过的图像。
-
10
This part is the torso.
这个部分是躯干。
-
11
It’s made of seven extremely durable layers.
它是由七个极其耐用的层次制成的。
-
12
This thick insulation protects against temperature extremes and radiation.
这个厚厚的隔离层防御了极端温度和辐射。
-
13
Next is what they call a "bladder" of oxygen that's an inflatable sac, filled with oxygen, to simulate atmospheric pressure.
下一个是所谓的氧气囊，那是一个可充气的囊，充满了氧气，用来模拟大气压强。
-
14
This bladder presses against the body with the same force as the Earth's atmosphere at sea level.
这个囊状物压在皮肤上，带着同样的力量，就像地球空气在海平面上一样。
-
15
The innermost layers provide liquid cooling and ventilation.
最内层提供了液体冷却和通风设备。
-
16
Despite all the layers, the suit is flexible, allowing free movement so we can work.
尽管有所有这些层，宇航服是有灵活性的，允许自由运动，所以我们能够工作。
-
17
Another really sophisticated part of the space suit is the helmet.
另一个非常复杂的宇航服的部分是头盔。
-
18
I brought one along to show you. Can I have a volunteer come and demonstrate?
我带了一个过来展示给你们。我能找个志愿者过来演示一下吗？