Circumradius
n. [几]外接圆半径
🗣️ 情景例句
When Alexandra arrives,
等Alexandra到达时，
Lots of people like stamp collecting.
许多人喜欢集邮。
It did not take the firefighters long to put out the fire, and they at once started to look for causes of the fire.
消防队员没花多时间就把大火扑灭了，他们马上开始调查火灾发生的原因。