So, you should know that there's four radial nodes, right, we have 5 minus 1 minus l -- is there a question?

你们要记住这里有四个节点，对吧，５减去１减去ｌ，有问题吗？

麻省理工公开课 - 化学原理课程节选

If we're in L.A, where should we go?

如果我们现在在洛杉矶，我们应该去哪儿呢?

纽约和洛杉矶不一样 - SpeakingMax英语口语达人

And if you've typed in l when you should've 1 typed a 1, or a 1 when you should've typed an l, you're likely to miss it. If you've made a mistake with upper and lower case. Things like that. So just be very careful looking at that.

如果你本来想打，1，的时候,却输成了，l，或者打，l，的时候输成了，你很可能注意不到这个错误,如果你把大小写弄混了也是一样,要注意这个错误。

麻省理工公开课 - 计算机科学及编程导论课程节选