To attach the preparatory to the senior school these three classes were known officially, on speech days and in reports, as upper, middle, and lower second.

作为高中的预备班，在演讲日和报告中，这三个班被正式称为上、中、下二班。

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As pianos became more available, they brought classical music, the music which previously had been composed only for the upper classes, into the lives of the middle-class people as well.

随着钢琴越来越普及，古典音乐也随之进入了中产阶级的生活，而在此之前，古典音乐只是为上层阶级创作的。

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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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This is essentially the upper middle classes stating that the billionaires should be paying more tax.

FORBES: Buffett, Bettencourt, Now the Germans Are Calling for Higher Taxes

This price barrier makes the coffee shop culture mainly a preserve of the upper middle classes in India.

BBC: Coffee v tea: Is India falling for the cappuccino?

Another reason is that the upper middle classes have held their own.

ECONOMIST: Why Britain is becoming less socially mobile