However, on Friday we will use a different approach so we can talkabout bonding within atoms that have more than two atoms, molecules with more than two atoms.
但是,在周五我们,会用一种新的办法来讨论,不止两个原子的分子的成键。
Let's look at some patterns that will explain in more detail how we can use the "I can't" pattern.
下面让我们来看一些句型,它们会更具体地解释我们应如何使用“I can't”句型。
Another important concept in probability theory that we will use a lot is expected value, the mean, or average-- those are all roughly interchangeable concepts.
概率论中另外一个常用的重要的概念是,期望值或者也叫均值,这两个概念可以互换
Pages and pages of them, so no one expects you to know all those identities, but there are a few popular ones we will use.
好几页的内容,我不要求你们都能记下来,但是我们会用到一些著名的恒等式
The grades for the course will be assigned roughly, and I use the word roughly because we reserve the right to move these numbers around a little bit, but basically in the following percentages: 55% of your grade comes from the problem sets, the other 45% come from the quizzes.
课程的评分将会很严格,我用严格这个词儿,是因为我们保留,微调分数的权利,但是基本在以下范围内:,55%的分数来自于问题的提出,另外45%来自于测验。
So, I brought up this idea, "What if we could just use SMS? You could send what you're doing. It will go out in real time to all the people who are interested in hearing it. And then, it would be archived on the Web. You could also enter it from the Web and it would be device-agnostic.
所以我提出了这样的想法,如果我们只使用短信息会怎么样?,你可以发送你正在做的事,它会立即,让每个有兴趣听的人都看到,接着,它会在网上存档,你还能再网上读到它,而不需要设备支持。
We want to be more--a bit more sophisticated than that, if you will, and use other terms, so we'll talk generally about Beethoven's composition or Beethoven's piece or Beethoven's work or his master work or chef d'oeuvre or however fancy you want to get with it.
我们想用些更精确的词藻,用其他措辞表现,我们一般会说贝多芬的音乐创作,或贝多芬的乐章,贝多芬的乐曲,他的杰作,或名曲,或是任何你想到的花哨词汇称呼它
And this is a little different from what happened ten or so years ago, but the so-called Y2K problem was essentially the result of programmers not really having the foresight to realize, "Maybe we shouldn't use so few bits or so few digits to represent a year because eventually this will be a problem."
这个跟10年前发生的事情有点不一样,那个所谓的“Y2K“问题,本质上的结果是,程序员没有真实地预见和认识到,“可能我们没必要用到这些位数或数字,来表示一年,但是最终这个将会,是个问题“
I'm not sure whether we'll use the Classes server to have you sign up for discussion sections online, or whether we will do it the old-fashioned way and have you sign up on forms that we'll give you here in class.
我还没想要是用校网站,让大家在线讨论,还是用传统的,课堂讨论。
So can we use that activation of these reasons actually help to predict what people will buy?
所以我们能不能因此利用这种活动,来预测人们会买什么呢?
But we will also use judgment and I'm going to appeal to the T.A.'s to help me on judging the grading.
但是我们也会考虑大家平时表现,我会参考助教的意见,来给你们评分
So now in this problem, we can do something slightly different, and let's use this expression here,and I will do that, then I'll stop for today.
对于这个问题,我们可以稍微做点变化,让我们用这个式子,就是这样,今天就讲到到这里
All right? And if you want to do other things, whoops, sorry-- and add them together, we will get out, again, a concatenation of that string. And these will, we'll let you work through the variations, but these are the simple expressions we can use.
对不对?如果你想要进行一些别的操作,哦,对不起-是加到一块,然后结果值也是,两个字符串的链接,这些会,我们会让大家慢慢学习变量,但是这些是我们能用的最简单的表达式。
But because we're now programming a computer at a lower level and because as we said last week, you really have to be precise and then careful to instruct this machine, this fairly dumb machine that will only do what you tell it to do very specific instructions, do we have to use a more precise syntax than just a puzzle piece might have previously allowed.
但是我们是要在电脑的低平台上编程不是吗?,那我们就要像我上周提到过的那样,一定要小心,小心,再小心地,操纵这台又聋又哑的机器,它只会根据你敲进去的,特定指令来做事,所以我们必须使用非常精细的语法,而不是模模糊糊,让人费解的概念。
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