It is an electron beam. In the 1890s, the latter part of the 19th century a very fashionable word was "ray."

那是个电子束，在十九世纪九十年代，就是19世纪末,一个很时髦的词汇-“光线“

麻省理工公开课 - 固态化学导论课程节选

And the main points of the latter part of the lecture is what are these quantities?

方程右边的物理量,是什么？

麻省理工公开课 - 热力学与动力学课程节选

And,of course,the challenge -- so this is the latter part of the course-- is what do you do with this and Europe?

当然,质疑是,这部分会在日后课程提到,即该如何处理这和欧洲各国的关系

耶鲁公开课 - 1871年后的法国课程节选

The idea of the immigration model is that Hebrew settlement would have probably occurred at about the same time in the latter part of the thirteenth century The Hebrews could take advantage of all of these upheavals and the weakened hold of Egypt.

移民模型的观点是,希伯来人的定居可能发生了,大约也在十三世纪后半叶,希伯来人会利用所有这些激变,以及埃及的衰落。

耶鲁公开课 - 旧约导论课程节选

And just to give you some small defense of that approach, I always like to ask students, "Suppose we didn't have a single historical record, no newspaper, no diaries. You know nothing totally reliable for what happened in the latter part of the eighteenth century in America."

我可以给你们一个反驳的理由,我总是问学生们,"如果没有历史文献,报纸和日记,那么对于美国十八世纪后期的历史,你们将一无所知"

耶鲁公开课 - 古希腊历史简介课程节选