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第一段
1 .Today we're going to look at an important area of science, namely nanotechnology.
今天我们将要去看一个科学的重要领域，即纳米技术。
2 .So what is it?
那是什么呢?
3 .Nano means tiny, so it's science and engineering on the scale of atoms and molecules.
纳米意味着微小的，所以它是基于原子和分子的规模上的科学和工程学。
4 .The idea is that by controlling and rearranging atoms, you can literally create anything.
这个想法是，通过控制和重新排列原子，你可以创造任何东西。
5 .However, as we'll see, the science of the small has some big implications affecting us in many ways.
然而，正如我们所看到的，小的科学有一些大的影响，也会在许多方面影响我们。
第二段
1 .There's no doubt that nanotechnology promises so much for civilisation.
毫无疑问，纳米技术是人类文明的希望。
2 .However, all new technologies have their teething problems.
然而，所有的新技术在初期都会有困难。
3 .And with nanotechnology, society often gets the wrong idea about its capabilities.
而纳米技术，社会往往会误解它的能力。
4 .Numerous science-fiction books and movies have raised people's fears about nanotechnology with scenarios such as inserting little nano robots into your body that monitor everything you do without you realising it, or self replicating nano robots that eventually take over the world.
许多科幻小说和电影都引发了人们对纳米技术的担忧，比如在你的身体里插入一些纳米机器人，在你没有意识到的情况下监视你所做的一切，或是自我复制的纳米机器人最终会占领这个世界。
第三段
1 .So how do we safeguard such a potentially powerful technology?
那么，我们如何确保这样一个潜在的强大技术的安全性呢?
2 .Some scientists recommend that nano particles be treated as new chemicals with separate safety tests and clear labelling.
一些科学家建议纳米颗粒应该作为新的化学品来完成一些独立的安全测试，清除标记。
3 .They believe that greater care should also be taken with nano particles in laboratories and factories.
他们认为，在实验室和工厂中，纳米微粒也应该得到更大的关注。
4 .Others have called for a withdrawal of new nano products such as cosmetics and a temporary halt to many kinds of nanotech research.
也有人呼吁取消新的纳米产品如化妆品和暂时停止各种纳米技术研究。
第四段
1 .But as far as I'm concerned there's a need to plough ahead with the discoveries and applications of nanotechnology.
但对我来说，需要推进纳米技术的发现和应用。
2 .I really believe that most scientists would welcome a way to guard against unethical uses of such technology.
我真的相信，大多数科学家都欢迎一种方法来防范这种技术的不道德的用途。
3 .We can't go around thinking that all innovation is bad, all advancement is bad.
我们不能认为所有的创新都是坏的，所有的进步都是坏的。
4 .As with the debate about any new technology, it is how you use it that's important.
关于任何新技术的争论，重要的是它是如何使用它的。
5 .So let's look at some of its possible uses.
所以让我们看看它的一些可能用途。
第一段
1 .Thanks to nanotechnology, there could be a major breakthrough in the field of transportation with the production of more durable metals.
由于纳米技术，在交通运输领域与更耐用的金属生产制造业有可能是一个重大突破。
2 .These could be virtually unbreakable, lighter and much more pliable leading to planes that are 50 times lighter than at present.
这可能是坚不可摧的，更轻，更柔软的可以导致飞机会比现在轻50倍。
3 .Those same improved capabilities will dramatically reduce the cost of travelling into space making it more accessible to ordinary people and opening up a totally new holiday destination.
这些改进的功能将(Q35)大大减少太空之旅的费用，使它更易被普通人接受，开启一个全新的度假胜地。
第二段
1 .In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes.
在技术方面，计算机行业将能够缩小电脑零件到一个很微小的尺寸。
2 .We need nanotechnology in order to create a new generation of computers that will work even faster and will have a million times more memory but will be about the size of a sugar cube.
我们需要纳米技术是为了创造新一代电脑，它们将工作更快，将有一百万倍以上的内存，但可能会是一个糖块大小。
3 .Nanotechnology could also revolutionise the way that we generate power.
纳米技术也可以革新我们产生动力的方式。
4 .The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present.
太阳能电池的成本将大幅降低，因此利用这种能量会比目前更经济。
第三段
1 .But nanotechnology has much wider applications than this and could have an enormous impact on our environment.
但是，纳米技术比这一领域有更广泛的应用，并能对我们的环境产生巨大的影响。
2 .For instance, tiny airborne nano robots could be programmed to actually rebuild the ozone layer, which could lessen the impact of global warming on our planet.
例如，微小的空气中的纳米机器人可以被编程为重建臭氧层，从而减少全球变暖对我们地球的影响。
3 .That's a pretty amazing thought, isn't it?
这是一个非常惊人的想法，不是吗?
4 .On a more local scale, this new technology could help with the clean up of environmental disasters as nanotechnology will allow us to remove oil and other contaminants from the water far more effectively.
以当地规模，这种新技术可以帮助环境灾害的清理，纳米技术将允许我们把石油和其他污染物从水中移出得更有效。
5 .And, if nanotechnology progresses as expected as a sort of building block set of about 90 atoms then you could build anything you wanted from the bottom up.
而且，如果纳米技术的进展如预期般的一样一种约90个原子的建筑块--那么你可以从底部建造出任何你想要的。
6 .In terms of production, this means that you only use what you need and so there wouldn't be any waste.
在生产方面，这意味着你只使用你所需要的，所以不会有任何的浪费。
第四段
1 .The notion that you could create anything at all has major implications for our health.
关于你可以创造任何东西的概念，对我们的健康有着重大影响。
2 .It means that we'll eventually be able to replicate anything.
这意味着我们将最终能够复制任何东西。
3 .This would have a phenomenal effect on our society.
这会对我们的社会产生巨大的影响。
4 .In time it could even lead to the eradication of famine through the introduction of machines that produce food to feed the hungry.
届时通过引进的机器生产粮食来养活饥饿的人，它甚至可能根除饥荒。
第五段
1 .But it's in the area of medicine that nanotechnology may have its biggest impact.
但它在医学领域，纳米技术可能有其最大的影响。
2 .How we detect disease will change as tiny biosensors are developed to analyse tests in minutes rather than days.
。我们如何检测疾病将会发生改变，随着微小的生物传感器的发展，对于一些测试它们会在几分钟之内进行分析而不是数天。
3 .There's even speculation nano robots could be used to slow the ageing process, lengthening life expectancy.
甚至有推测纳米机器人可以用来延缓老化过程，延长寿命。
第六段
1 .As you can see, I'm very excited by the implications that could be available to us in the next few decades.
正如你所看到的，对于这些可以提供给我们未来几十年里的影响我感到非常兴奋。
2 .Just how long it'll take, I honestly don't know.
至于需要花费多久的时间，我就真的不知道了。