All right. It's 12:05, so why don't you go ahead and take 10 more seconds on the clicker question today.

好，现在已经，12：05，了，请大家,花十秒钟的时间做一下今天的选择题吧。

麻省理工公开课 - 化学原理课程节选

All right. So let's go ahead and try an example here in thinking about photoelectron spectroscopy.

好的，下面我们继续来看一个,关于理解光电子能谱的例子。

麻省理工公开课 - 化学原理课程节选

Okay, right, so if you're actually making food and you're creating some of a recipe then it's very difficult to know exactly the portions that go in when you eat the final food product that comes from it, so that's right. How many of you--go ahead.

对的,所以如果你自己做饭,你会有自己的一套食谱,你很难了解最后的成品中,原成分的精确含量了,所以就是那样,有多少人,你说

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So we can go right ahead and fill these in. 1 2, 3 4, 5 and 6.

一，二，三，四，五和六。

麻省理工公开课 - 化学原理课程节选

All right. So, let's go ahead and draw our Lewis structure here with sulfur in the middle.

好，那么，让我们来把我们的,路易斯结构画在这，硫在中间。

麻省理工公开课 - 化学原理课程节选

And as we said, he made the assumption that those two charges were equal, so we can go ahead and cross those right out.

我们说过,他假设，这两个电荷是相等的。

麻省理工公开课 - 化学原理课程节选

So, you can go ahead and calculate that, if you can't see that right away.

如果你们不能，马上想到你们可以算算。

麻省理工公开课 - 化学原理课程节选