A well-to-do person is rich enough to be able to do and buy most of the things that they want.
例句
...a rather well-to-do family of diamond cutters.从事钻石切割的相当富裕的家庭...two well educated girls from well-to-do homes.两个颇有家教的富家女孩
英英词典释义
Adjective
1. 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"