基本解釋n. 被關(guān)系者詞組短語短語Relatum -expansion place 擴(kuò)展位relatum更多詞組英英字典柯林斯英英字典 one of the objects between which a relation is said to hold relatum劍橋字典relatum柯林斯字典專業(yè)釋義數(shù)學(xué)被關(guān)系者