It seemed to be the regime that divided France least, what Gambetta called the nouvelles couches,or the new social strata, the new social strata,the middle classes,the petty bourgeois.

这看似是最不会导致法国分裂的政体,甘必大称它为新阶层,或新的社会阶层,中产阶级,小资产阶级

耶鲁公开课 - 1871年后的法国课程节选

In Korea, students can drop their classes in the middle of the semester. Is it also possible here?

在韩国，学生可以学期中的时候把课退掉。在这里也可以吗？

对于返校日 - SpeakingMax英语口语达人

Amsterdam is dominated by the middle classes.

阿姆斯特丹充斥着中产阶级

耶鲁公开课 - 欧洲文明课程节选