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. (蓋有圓形碗狀屋頂的)圓形建築或房間 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 （有圓頂的）圓形建築物；圓形大厛 返回 rotunda