In terms of class, digital divide exists among different types of workers and between the upper and middle classes and the lower class.

在阶级方面，不同类型的工作者，以及中上层阶级和下层阶级之间，都存在着数字鸿沟。

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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》

As a member of the middle class, Gaskell could hardly help approaching working-class life as an outside observer and a reporter, and the reader of the novel is always conscious of this fact.

作为中产阶级的一员，Gaskell 不得不以旁观者和记者的身份接近工人阶级的生活，而小说的读者也总是意识到这一点。

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Four teachers and the first class of eighty young women lived and studied in the building when the school opened.

VOA: special.2010.06.27

You'll recall that at the very end of class we pulled up this little demo that looked like this.

你们可以回忆一下，我们曾,有个这样的演示。

哈佛公开课 - 计算机科学课程节选

Successive approximation, Newton-Raphson was one nice example, but there's a whole class of things that get closer and closer, reducing your errors as you go along.

逐渐逼近,牛顿迭代是一个很好的例子,随着你不断的时行下去,你会不断的离结果越来越近，逐渐地减少误差。

麻省理工公开课 - 计算机科学及编程导论课程节选

Do the math: Add the population of this class of people together and compare with the class of people that use iphone, the result with surprise you.

FORBES: Three Areas Of Blackberry 10 That Will Decide RIM's Fate

Mr. Zuckerberg currently holds in aggregate approximately 444 million shares of Class B common stock as well as 60 million shares of Class B common stock issuable upon the exercise of an option.

FORBES: Facebook: Zuckerberg Won't Sell For A Year, But Employees Can Get Out Earlier

The Navy built two classes of warships around the Aegis combat system, beginning with the Ticonderoga class of cruisers in the 1980s and then the Arleigh Burke class of destroyers in the 1990s.

FORBES: Missile Defense Becomes A Navy Mission