Then,in the early nineteen hundreds, the University of Illinois at Urbana-Champaign built three round barns that many farmers copied.

VOA: special.2009.12.29

It was a great round shield about three feet across and it had--let me step out here so that I can show you. Can you hear me back there?

它是一块直径大概有三英尺的巨大圆盾,恩,它还有...我出来演示吧,这样你们就能看清楚,能听到我说话吗

耶鲁公开课 - 古希腊历史简介课程节选