The findings are that seven different social strata have emerged out of the single agricultural labor class in the countryside.

结果表明：农村社会单一的农业劳动者阶层已经分化，出现了七个不同的社会阶层；

youdao

Owing to the neglect of the subjectivity of agents, many scholars study the social stratification in another perspective, that is, subjective identity of strata.

由于客观社会分层忽视了社会行动者的主体性，许多学者提出了社会分层研究的另一视角，即阶层的主观认同研究。

youdao

Obviously, information with its technology has already become a new variable and, in its close relation to social strata, is now rebuilding the mechanism of social stratification.

信息、信息技术已经成为一种新的变量，并与社会阶层之间产生着密切的关系，重塑着社会阶层化机制。

youdao

They found on average a 19% difference between the highest and lowest social strata in the risk of dying in each country and about half of the difference was due to the risk of being killed by smoking.

BBC: NEWS | Health | Smoking 'accounts for health gap'

But the word "caste" is routinely used by government experts to refer to social strata in underprivileged Muslim communities.

WSJ: India Classifies More Castes as 'Backward' In Affirmative-Action Bid to Help the Poor

Society being composed of social strata a family will find its children in competition with children from families in roughly the same social-economic stratum, with roughly the same total amount of family income to invest in children.

FORBES: Demographic Decline and Investment Intensity in Children -- Observations on China and Japan