Step three in our Lewis structure rules is to figure out how many electrons we would need in order for every single atom in our molecule to have a full valence shell.

路易斯结构规则的第三步是,找出让分子中每个原子的价壳层,都排满应该需要多少个价电子。

麻省理工公开课 - 化学原理课程节选

And that you might look at, for example, that first example, and say, man by this stage it was already sorted, yet it had to go through and check that the third element was in the right place, and then the fourth and then the fifth and then the six.

你可能会去看看例如第一个例子，然后要抱怨，到这里,它已经是排好序的了,但他还是得去遍历查看,第三个元素是不是在正确的位置,然后第四个，第五个，第六个。

麻省理工公开课 - 计算机科学及编程导论课程节选

So if we have a third, we can just introduce it like this and so things start to line up a lot more nicely.

所以如果我们有第三个，我们可以像这样引进它,这样代码就排得漂亮多了。

哈佛公开课 - 计算机科学课程节选

Well they're not necessarily, because we only have the number three player in terms of size.

其实不是的,我们在规模上只能排到第三

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Can I get the guy way back, like three rows behind you in purple?

请倒数第三排的紫衣人回答

耶鲁公开课 - 博弈论课程节选

That is, it doesn't take one second to go the first, and then two seconds to go to the second, and three seconds to go to third.

就是说,不是第一秒到第一排,第二秒第二排,第三秒第三排这样

耶鲁公开课 - 生物医学工程探索课程节选

Make it a third row; there's enough for a third row.

再排一排,还能排第三排

耶鲁公开课 - 古希腊历史简介课程节选