an expert adviser involved in making important decisions but usually lacking official status 同义词：brain truster,
例句与用法
1.
He was a backroom boy who worked for british army during world war 他在第二次世界大战中是英国军方一名秘密武器研制人员。
2.
The movie showed these backroom boys working in thesecret military bases for the advanced weapons 电影再现了这些从事现代化武器生产的无名英雄们在秘密军事基地工作的情形。
3.
The doctor finished the operation , but his success depended on the backroom boys who had invented the new laser scalpel 医生做完了手术，但他的成功有赖于那些发明了新型激光手术刀的研究人员。
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