n.瓮；罐；骨灰盒
Finally one of the servants remembered the eels in the urn. 最后一个仆人想起了瓮里的鳗鱼。
The Polya urn problem is a famous model of wide application in probability. 波利亚罐问题是概率论中的著名模型。
They buried the urn in the cemetery. 他们将骨灰瓮埋在了公墓里。
