单词	rottenstone
释义	rottenstone noun rot·​ten·​stone ˈrä-tᵊn-ˌstōn  : a decomposed siliceous limestone used for polishing Word History First Known Use 1677, in the meaning defined above
随便看	rum tum ditty rum tum tiddy rum-dum rum-dumm rum-hole rum-mill rum-running rumaki rumakis rumal rumals Ruman rumania rumaniae rumanian Rumanian rumanians rumanias Rumansch rumba rumbaed rumbaing rumbas rumbelows rumble

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。