do-gooder

n (infml often derog 口, 常作贬义) person who performs or tries to perform good deeds, esp in an unrealistic, interfering or fussy way （力图）做好事的人（尤指方式不切实际、 多管闲事或帮倒忙）.

do over, do research into, do sb in, do sb. a favour, do sb. good, do sb. wrong, do sb/sth down, do sth out, do sth to sb, do sth. with a will, do up, do up one's hair, do well, do with, do with sth, do without, do without (sb/sth), do wrong, do's, do's and don'ts, do-it-yourself, do/try one's best, doc, docile, docilely, docility, dock, docker, docket, dockland, dockyard, doctor, doctoral, doctorate, doctrinaire, doctrinal, doctrine, document, documentary, documentation,