upper class

n.

上层社会，贵族阶层；

复数：upper classes

Upper Class
Women of the Upper Class
Philadelphia gentlemen : the making of a national upper class
Bobos in Paradise: The Upper Class and How They Got There
Book Review: Our Kind of People: Inside America's Black Upper Class
Our Kind of People: Inside America's Black Upper Class
Mother-Daughter Communication about Sex and Sexual Intercourse among Middle- to Upper-Class African American Girls.
The Role of Shared Reading in the Development of Phonological Awareness: A Longitudinal Study of Middle to Upper Class Children
Review of Our Kind of People: Inside America'S Black Upper Class
The Rise of American Boarding Schools and the Development of a National Upper Class