They manufacture the class of plastics known as thermoplastic materials.

他们生产被称为热塑材料的塑料类制品。

《柯林斯英汉双解大词典》

Thank you! Thank you for Principal Xu, all the teachers and most importantly, the class of 2019. If I can't make my speech fantastic, I will at least try to make it short.

谢谢你！感谢徐校长，感谢所有的老师，最重要的是，感谢2019级的同学们。如果我不能把我的演讲讲得精彩，我至少会试着把它讲得简短些。

youdao

Only 18.8% of the class of 1982 had some kind of diploma four years after high school, versus 45% of the class of 1972.

相对于1972届学生中有45%在中学毕业4年后获得了某种文凭来说，1982届学生的这一比例只有18.8%。

《柯林斯英汉双解大词典》

A Japanese student was in the class of eighteen ninety.

VOA: special.2010.05.27

This is boring. In fact, you can do some nice things to prove what is the class of functions you can compute with straight-line programs, and what you'd see if you did that is, it's not particularly interesting.

这很无聊，实际上，你可以通过做一些很有趣的事情,来证明你可以通过直线程序,来做很多功能，但是你也看到我们之前讲过的了，这不太有趣。

麻省理工公开课 - 计算机科学及编程导论课程节选

What is the class of algorithm that's- that probably applies to this, and how do I pull something out of that, if you like, a briefcase of possible algorithms to solve?

以及哪种算法-,可能可以应用到这类问题上,问题本身又能提取出什么东西来，以及可能解决问题的一系列方法的简介？

麻省理工公开课 - 计算机科学及编程导论课程节选

Penn went from 14.2% for the class of 2014 to 12.3% for the class of 2015.

FORBES: The Technology Revolution Changing College Admission

And actually, the most recent one was from the class of 1984, Keith Yoakum.

NPR: California Town Hit Hard by War Losses

The class of about 550 students was the first at the new high school.

WSJ: Suspect's Rapid Descent