There is nothing the matter with the United States except ... the parlor socialists, up-lifters, and do-goods.The form do-gooder appears in American English from 1927, presumably because do-good was no longer felt as sufficiently noun-like. A slightly older word for this was goo-goo.
來自《簡(jiǎn)明英漢詞典》
來自金山詞霸
來自美劇《凱莉日記》
來自金山詞霸 每日一句
來自《傲慢與偏見》