exurb

ex.urb

n.（名词）
A region lying beyond the suburbs of a city, especially one inhabited principally by wealthy people.
城市远郊富裕阶层住宅区：城市远郊区，尤其主要为富人所居住

来源：
ex-
ex-
(sub)urb
(sub)urb

【引伸】
exur.ban
adj.（形容词）