TED演讲：宏观历史(6)
时间：2019-02-14 作者：英语课 分类：TED演讲教育篇
英语课
But of course, life is more than just exotic chemistry. 但是当然，生命不仅仅是奇异的化学物质。
How do you stabilize 1 those huge molecules 3 that seem to be viable 4? 那是怎么稳定那些大量的、似乎有存活的分子的呢？
Well, it's here that life introduces an entirely 5 new trick. 这就是生命呈现的一个全新的窍诀。
You don't stabilize the individual; you stabilize the template, the thing that carries information, and you allow the template to copy itself. 不能稳定个体；只能稳定模板，那是携带信息的东西，让模板复制自己。
And DNA 6, of course, is the beautiful molecule 2 that contains that information. 当然，DNA是美丽的分子，包含着信息。
You'll be familiar with the double helix of DNA. Each rung contains information. 你熟悉双螺旋型的DNA。每个链都包含信息。
So, DNA contains information about how to make living organisms. And DNA also copies itself. 所以DNA就包含关于如何创造生命体的信息。同时DNA也能自我拷贝。
So, it copies itself and scatters 7 the templates through the ocean. So the information spreads. 所以它自我拷贝，同时把模板扩散到海洋中。因此信息也传递开了。
Notice that information has become part of our story. The real beauty of DNA though is in its imperfections. 值得注意的是，信息已经成为我们故事中的一部分。DNA真正的魅力在于它的不完美。
As it copies itself, once in every billion rungs, there tends to be an error. 当它自我拷贝的时候，在每十亿个链中有一个链可能产生错误。
And what that means is that DNA is, in effect, learning. 也就是说，实际上DNA在进化。
It's accumulating new ways of making living organisms because some of those errors work. 它在积累创造生命体的新方法，因为有些错误是可以运作的。
So DNA's learning and it's building greater diversity and greater complexity 8. 所以DNA是在进化，它在呈现丰富多样性和大量的复杂性。
And we can see this happening over the last four billion years. 我们看到这进化持续发生了四十多亿年。
vt.（使）稳定，使稳固，使稳定平衡；vi.稳定
- They are eager to stabilize currencies.他们急于稳定货币。
- His blood pressure tended to stabilize.他的血压趋向稳定。
n.分子，克分子
- A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。
- This gives us the structural formula of the molecule.这种方式给出了分子的结构式。
分子( molecule的名词复数 )
- The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
- Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。
adj.可行的，切实可行的，能活下去的
- The scheme is economically viable.这个计划从经济效益来看是可行的。
- The economy of the country is not viable.这个国家经济是难以维持的。
ad.全部地，完整地；完全地，彻底地
- 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。
(缩)deoxyribonucleic acid 脱氧核糖核酸
- DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
- Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
v.（使）散开， （使）分散，驱散( scatter的第三人称单数 )；撒
- He scatters money about as if he were rich. 他四处挥霍，好像很有钱。 来自《简明英汉词典》
- Truth raises against itself the storm that scatters its seeds broadcast. 真理引起了反对它自己的狂风骤雨，那场风雨吹散了真理的广播的种子。 来自辞典例句
n.复杂(性)，复杂的事物
- Only now did he understand the full complexity of the problem.直到现在他才明白这一问题的全部复杂性。
- The complexity of the road map puzzled me.错综复杂的公路图把我搞糊涂了。
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