well-to-do /ˌwɛltəˈdu/
  (a.)富有的
  well-to-do
       adj : in fortunate circumstances financially; moderately rich;
             "they were comfortable or even wealthy by some
             standards"; "easy living"; "a prosperous family"; "his
             family is well-situated financially"; "well-to-do
             members of the community" [syn: comfortable, easy,
             prosperous, well-fixed, well-heeled, well-off,
             well-situated]