back roomn1 (esp unimportant) room at the back of a building 後室（位於建筑物後部的房间, 尤指无重要用途的）.2 (idm 习语) ,back-room `boys (infml 口 esp Brit) scientists, engineers, research workers, etc who receive little public attention 在幕後默默工作的科学家、工程师、研究人员等.
牛津英汉双解词典