Now, let me take a sidebar for about five minutes to talk about course administration, the administrivia things that we're going to do in the course, just so you know what the rules are.

现在，让我用大约五分钟的边角料时间,来说说本门课的基本信息,也就是我们需要在课上做的事儿，好让你们了解一下规则。

麻省理工公开课 - 计算机科学及编程导论课程节选

I know it's boring, but we need to do it so you know what the ground rules are.

我知道这很无聊，不过为了让你们了解规则,我们必须得做这个。

麻省理工公开课 - 计算机科学及编程导论课程节选

So this means we can actually calculate this for any molecule that we've drawn the Lewis structure for, because we actually do need to draw the Lewis structure before we know, for example, how many of each of these we have, or at least go through the rules.

这意味着我们可以将原来画过,路易斯结构的分子的形式电荷计算出来，因为我们其实在画出,路易斯结构之后才能知道，比如，这些量的值是多少，或者至少我们需要经过前面的那些步骤。

麻省理工公开课 - 化学原理课程节选

And bear in mind the rules we're talking about here are not rules you explicity know.

记住,我们在这里所讨论的规则,你无法明确地意识到

耶鲁公开课 - 心理学导论课程节选