quadrumvirate

詳細解釋：

quad.rum.vi.rate

n.（名詞）
A group of four people joined in authority or office, especially a government of four people:
四人小組，四頭執政：在權力或職務方面聯合起來的四人小組，尤指四人組成的政府：
例句：
.[Chiang Kai-shek] was . . . the last survivor of the World War II quadrumvirate that included Roosevelt, Churchill and Stalin. (Newsweek)
.［蔣介石］ 是…第二次世界大戰中四人集團的最後倖存者，這四人包括羅斯福、邱吉爾和史達林. (新聞周刊)

來源：
quadr(i)-
quadr(i)-
(tri)umvirate
(tri)umvirate