If you've read L'Allegro and Il Penseroso, you know that the image of the great mythological poet Orpheus is always a loaded one for Milton.

如果你们读过《快乐的人》和《沉思的人》，就会知道,伟大的神话诗人俄耳甫斯对弥尔顿来说一直是个沉重的形象。

耶鲁公开课 - 弥尔顿课程节选

So that means it's not possible, if we've made these stipulations in the first place, to have a case where l equals 1.

这说明我们之前的假设,ｌ等于１不可能的。

麻省理工公开课 - 化学原理课程节选

Under the L group we've got negative, anxious, unsettled.

组下我们有,消极,焦虑,不安

耶鲁公开课 - 聆听音乐课程节选

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

How many bonding electrons does c l have? All right. Let's see, we've got a mixed response here, it turns out it has two bonding electrons.

氯有多少成键电子？好，让我们来看看，大家的回答不太一致，结果应该是两个成键电子。

麻省理工公开课 - 化学原理课程节选