阶层 (jiē céng): social class

He came from an ordinary working-class family and got into a prestigious university through his own hard work.

This policy aims to narrow the wealth gap and help the low-income class improve their lives.

In today's society, people from different social classes often have completely different consumption habits.

With economic development, more and more of the peasant class have the opportunity to work in cities.

Education is seen as one of the important ways to promote social class mobility.

Through his own efforts, he successfully transcended his original social class.