stock·brok·er belt
noun/ˈstɒkbrəʊkə belt/
/ˈstɑːkbrəʊkər belt/
[singular] (British English)- an area outside a large city, where many rich people live
（大城市外围的）富人住宅带 CultureMany of the people who live in the stockbroker belt work in the city as highly paid professional people, for example stockbrokers (= people who buy and sell shares in companies for other people). Most people think of the typical stockbroker belt as Surrey, south-west of London, but the phrase can be used to refer to any expensive area outside a city.