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"My brother and I were talking about how - normally you do not just walk up to a temple or a synagogue and say, 'hey,can I come in and take a look?' So this is a great opportunity and exposes me to a lot of things that I would not otherwise have been exposed to,"
VOA: standard.2009.10.19
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All right. So, today we're going to be talking about molecular orbital theory, but first I wanted to just mention, in case some of you didn't hear what the Nobel Prize was this morning, and this was in chemistry, it went to three different chemists.
好的，今天我们要讲的是,分子轨道理论，但首先我要说，以免有些同学没有听到,今天早上的诺贝尔奖，这是化学奖，它颁给了3个不同的化学家。
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because if you go out in public and you start talking to someone, you'll just burst into tears.
因为在外面的时候，你一开口跟人说话，眼泪就禁不住留下来。
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I just love talking about this stuff and I welcome you to come to my office hours.
我就是喜欢谈论这些东西,而且我也欢迎你在我办公的时间来。
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But first, I just want to remind you when we're talking about molecular orbital theory, this is treating electrons as waves, so what we're actually able to do is either constructively or destructively combine atomic orbitals to form molecular orbitals.
但首先，我要提醒你们,当我们讨论，分子轨道理论的时候，我们把电子看作是一种波,所以我们可以相长叠加,或者相消叠加这些原子轨道来组成分子轨道。
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It's very funny how people think that it's alright to just come up and start talking to you.
他们认为可以直接过来和你开始聊天，这个想法很有趣。
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I love speaking and just talking to people and helping them understand things, you know.
我喜欢讲话，跟人交谈，帮他们理解问题之类的。
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I just wanted to introduce those concepts because you've read about them; we'll be talking more about RNA interference in particular as we go on through the course.
我只是想简单介绍下这些概念,因为你们已经读过它了,随着课程的深入,我们将会讨论更多关于RNA干扰的内容
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And "it" definitely just refers to time and you only use "it" when you're talking about time.
这时，“it” 一词仅指时间，当你在谈论时间的时候，只能使用 “it”。
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I don't want you to just start talking, but raise your hand.
举手吧，我不想你们只是开始说。
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For an angular node, we're just talking about what the l value is, so whatever l is equal to is equal to the number of angular nodes you have.
对于角向节点，我们其实就是在讨论l，的值是多少，因此不管，l，的值等于几,它就等于你所有的角向节点的数目。
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