class

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[klas]〈名词〉班；课；年级；阶级，阶层；等级，类别

We were both in the sameclass那时我们在同一个班。

What class are you in?你在哪个班?

Class distinctions have become less important during the last 50 years．在过去五十年间，社会等级差别已经变得不那么重要了。

Society is divided into upper，middle and lower classes．社会分为上层、中层和下层阶级。