The bishop took his place on the cathedra during the church ceremony.

cathedra 是拉丁语借词，原意为"椅子"，在基督教语境中专指"主教的宝座"或"主教座"。这个词也是英语单词"cathedral"（大教堂）的词源，因为大教堂就是设有主教座位的教堂。