the upper crust
US /ðə ˈʌpər krʌst/
UK /ðə ˈʌpər krʌst/

1.
上流社会, 上层阶级, 精英阶层
the highest class or most privileged people in a society
:
•
They belong to the upper crust of society.
他们属于社会的上流阶层。
•
Only the upper crust can afford to live in that exclusive neighborhood.
只有上流社会才能负担得起住在那个专属社区。