Now I'd like to end -I think I have a few minutes here--I'd like to end with a particular piece.
现在我想差不多快结束了,应该还有几分钟,那就用特殊的一段曲子来结束吧
This is actually a piece of code that is really easy to think about recursively and is much more difficult to think about in other ways.
这确实是一段用递归思考起来非常容易,而其它方法特别麻烦的代码,这一段代码的意思就是。
but now I want to say something about the passage from which I quoted over against the passage from Gadamer at the end of the Gadamer lecture.
现在我讲讲我引用的那段话,我用它来与葛达玛那一课,结尾部分的一段进行对比。
And none other than Thomas Jefferson himself left this famous description of characterizations of Southerners and Northerners.
最有代表性的便是托马斯·杰斐逊他本人,用这么一段人们耳熟能详的话,描述了南方人与北方人的不同特征
Later writers take this poetic image and fill out the allusion to - drowning in this ancient song, and compose the prose accounts in Exodus 14, in which the metaphor is literalized.
随后,作者利用这个场景,用这个古老的歌谣进行影射,创作了这一段白话诗,《出埃及记》14,在这段文字中的暗喻被文学化了。
I began this class with a demonstration of -that illustrates two very important facts about language.
我用一段演示来开始今天的课,这段演示阐述了语言非常重要的两个事实
So it's going to express this gene, but you've put a foreign gene in the place of the natural gene, and so the foreign gene gets expressed instead.
所以它就会表达这段基因,但是你已经用一段,异源基因替代了原有基因,因此这段外来基因就被表达了
In political philosophy it is never a sufficient answer to answer a question with a statement " "because Plato says so " " or "because Nietzsche says so."
对于政治哲学而言,答案永远都嫌不充足,无法仅用一段陈述来回答一个问题,“因为柏拉图如是说“,“因为尼采如是说“
Let me play some music at the piano.
我用钢琴弹一段
In Scratch you may have realized that, "I could implement my program this way with these puzzle pieces, but it kind of feels -- like I could use these puzzle pieces instead" -- that's absolutely the case in programming.
在Scratch中你可能已经意识到,“我可以用这一段代码来,执行我的程序,不过这有点感觉到,我可以用这些代码段来代替“,那绝对是编程中的一个情况。
We won't come back to it at least for the moment, but you see that it's mercifully short, and as time passes we will do some rather interesting tricks with it.
至少我们这节课用不上,看,这篇故事很短,过一段时间我们会针对它做一些很有趣的练习。
Computing square root. I'm going to capture it in a piece of code, I'm going to be able to refer to it by a name, and I'm going to suppress the details, meaning inside of that computation, you don't need to know what it does. You just need to know, if I give it the right kind of input, it'll give me back an input that satisfies the contract that I set up.
比如计算平方根,我会用一段代码来说明,我将给它命名,并且忽略细节,意思就是在这一段计算过程中,你不用知道它做了什么,你只需知道,如果我进行了正确的输入,它将会给我符合条件的输出。
You could do the same thing in mammals and here's one quick example of that, using a different kind of a vector, but inserting a gene into the fertilized egg of a mammal, in this case, a sheep.
你也能在哺乳动物上做到同样的效果,这里有另一个简短的例子,用了另一种载体,把一段基因注入哺乳动物的受精卵中,在这里我们用了绵羊
The final example I'll give of this is a short demonstration.
我想用一段简短的演示,来作为无意识的最后一个例子。
So I introduced Hirsch in that context, and now I want to go back to him a little bit and I want to work with two passages which I have sent you all in e-mail-form and which I have neglected to put on the board, but they're so short I don't think that will be necessary.
我在刚才那个问题中提到了赫施,现在我想再次讲一讲他,并分析下我用邮件发给你们的那两段话,我忘记把它们放到黑板上了,但它们很短,我想那样也没有必要。
If you have DNA fragments, so this is DNA that you've cut up into fragments using restriction enzymes for example.
如果你有DNA片段,例如有一段你用限制酶,切割成片段的DNA
You could use PCR to do that because if you amplify a gene in PCR, that gene had to be present from the beginning.
你可以用PCR技术来鉴定,因为如果你能用PCR扩增某一段基因,说明它从一开始就肯定是存在的
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