( part of) a building which is round in shape , and often has a dome (= rounded roof ) on top
发音
例句
1. The Capitol at Washington has a large rotunda. 华盛顿的国会大厦有一圆形大厅。 2. The rotunda was almost deserted today, dotted with just a few tourists. 圆形大厅今天几乎没有多少人,只零星散布着几个游客。