circular

圆形的、圆的

They sat around a large circular table in the meeting room.

他们围坐在会议室里一张大圆桌旁。

环形的、绕圈的

Stir the paint slowly with a circular motion.

以绕圈的方式慢慢搅拌油漆。

循环的、循环论证的

His explanation is circular and proves nothing at all.

他的解释是循环论证，根本什么都证明不了。

传单、广告单

A stack of circulars had piled up inside the mailbox.

信箱里堆了一叠广告传单。

通函、通知函正式

The ministry sent a circular to all local schools last week.

该部会上周向所有地方学校发出通函。