Rottenstone
[rɒtnstәun]
解释:
(noun.) a weathered and decomposed siliceous limestone; in powdered form it is used in polishing.
贾尔斯录入--From WordNet
[rɒtnstәun]
(noun.) a weathered and decomposed siliceous limestone; in powdered form it is used in polishing.
贾尔斯录入--From WordNet