back·room boy /ˈbækrʊm ˌbɔɪ, -ruːm-/ noun [countableC usually plural]British EnglishBrE informal
BOHsomeone such as an engineer or scientist whose work is important but who does not get much attention or fame 幕后英雄,无名功臣〔指工作很重要但默默无闻的工程师、科学家等〕
Examples from the Corpus
backroom boy• Poor eyesight had prevented Thomas from qualifying as a pilot; but he was not content to be a backroom boy.• Reg was already a well respectedbackroom boy and came to the club from highflying Walborough SolidFuel Albion.