And what it's used is to convert one type of group, what's called a carboxylic acid into another type of very reactive intermediate, which is called an acid chloride.

它被用来将一类被称作羧酸的化合物，转化成另外一类活性很高的反应中间体,也就是酰氯。

麻省理工公开课 - 化学原理课程节选

But I think it's like barbecue, you know, fried foods, things like that.

但我想它和烧烤差不多，油炸食物那一类的。

哈莱姆很独特 - SpeakingMax英语口语达人

Another hormone gets produced by the pancreas in response to low glucose levels, it's called glucagon.

胰腺产生另外一类激素,来应对血糖水平降低的情况,它叫做胰高血糖素

耶鲁公开课 - 生物医学工程探索课程节选

It means a gentleman; it means the best kind of person.

它的意思是绅士,表示最优秀的一类人

耶鲁公开课 - 古希腊历史简介课程节选

Perhaps more importantly, how to recognize a kind of algorithm based on its properties and know what class it belongs to. This is a hint. If you like, leaning towards the next quiz, that you oughta be able to say that looks like a logarithmic algorithm because it's got a particular property. That looks like an n log n algorithm because it has a particular property.

也许更重要的是,如何根据一个算法的特点将其辨别出来,并且知道它属于哪一类算法,这是一个提示，就对于接下来的测验来说,如果你喜欢你可以说它看起来像一个对数算法,因为它有一个特定的性质,那个看起来像一个n，log，n的算法,因为它有一个特定的性质。

麻省理工公开课 - 计算机科学及编程导论课程节选

I use iTunes quite a bit to download songs and movies and some things like that. It's great.

我经常用iTunes下载歌曲和电影那一类的东西。它很棒。

音乐市场的变化 - SpeakingMax英语口语达人

A progenitor cell, the definition, it just means it can generate the cells that are typical of that tissue or that organ, so it's capable of becoming these mature classes of cells.

祖细胞的定义就是,它能产生那个器官或者组织内的,所有的典型细胞,所以它可以成为那一类的成熟细胞

耶鲁公开课 - 生物医学工程探索课程节选

ATP is famous for its ability to store energy but it's also a messenger molecule.

TP分子的有名之处在于它能够储能,但它也是一类信使分子

耶鲁公开课 - 生物医学工程探索课程节选