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"Right now we have about They get one package of food every two weeks, a total of six packages if they are really in dire circumstances then we sometimes renew their order and send them another six packages."
VOA: standard.2009.09.09
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Now, we are very gentle in this course with respect to knowing integrals, but this is one you have to know.
这门课对积分,的要求并不高，但这个积分你们必须会算。
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Now, people are studying obese subjects because there're weight loss programs, like the one we had, and the subjects are available.
现在人们开始以肥胖者为实验对象,因为有许多减肥的项目,肥胖的实验对象是较容易找到的
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We talked about that quite in depth, but there are some differences now that we have more than one electron in the atom.
但是这里有一些不同的是，现在我们考虑的原子中,有多于一个,的电子。
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So, we are now going to do one standard problem where we will convince ourselves we can apply this formulas and predict the future given the present.
我们接下来将去研究一个标准问题,通过这个问题,我们能让自己相信,我们能利用这些式子,根据现状,预测未来
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Now, we know from the work in the Bystander effect that in general which one are we more likely to help in, when we're the only person or multiple?
我们从旁观者效应的实验中知道,我们在哪种情景上更可能出手相救，一个人，还是有其他人时？
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So let's compare what some of the similarities and differences are between hydrogen atom orbitals, which we spent a lot of time studying, and now these one electron orbital approximations for these multi-electron atoms.
很长时间的氢原子轨道和,现在多电子原子中,的单个电子轨道近似，我们可以对比，它们之间,的相似性和不同。
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And if we think about the six hydrogens, now each of those are going to bind by combining one of the carbon hybrid orbitals to a 1 s orbital of hydrogen.
如果我们考虑有六个氢原子，每个都会合起来,碳杂化轨道成键,每个氢的1s轨道。
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And when we describe this in terms of talking about chemistry terminology, we would call the first one the 1 s, and 1 is in parentheses because we're talking about the first electron there, and we would multiply it by the wave function for the second one, which is also 1 s, but now we are talking about that second electron.
当我们用化学术语来,描述它的时候，我们称第一个为“1s“,括号中的1是因为我们,在谈论第一个电子,而且我们会用它的波函数，乘以第二个,第二个也是“1s“,但是我们现在谈论的是,第二个电子。
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