benefactor
n.
mid-15c., from Late Latin benefactor, from Latin phrase bene facere, from bene "well" (see bene-) + facere "to do" (see factitious). Translated in Old English as wel-doend.
〔蒋〕[bene-好，fact做，-or表示人；“做好事者”] 施恩者，恩人，捐助者
〔李〕[bene=good好；fact=to do做；-or n.=person人→] n. person who does good deeds or gives friendly aid做好事者；恩人