n.甕；罐；骨灰盒
Finally one of the servants remembered the eels in the urn. 最后一個(gè)仆人想起了甕里的鰻魚。
The Polya urn problem is a famous model of wide application in probability. 波利亞罐問題是概率論中的著名模型。
They buried the urn in the cemetery. 他們將骨灰甕埋在了公墓里。
