柯林斯词典rotunda /rəʊˈtʌndə/ (rotundas) 1. N-COUNT A rotunda is a round building or room, especially one with a round, bowl-shaped roof. (盖有圆形碗状屋顶的)圆形建筑或房间 返回 rotunda剑桥词典a building , or part of one, that is round in shape , and often has a dome (= rounded roof ) on top （有圆顶的）圆形建筑物；圆形大厅 返回 rotunda