or结尾的单词有operator、professior、inventor、visitor、conductor、doctor、conductor、author 、editor、actor、professor、sailor等。

[例句]the nation's largest cable-TVoperator全国最大的有线电视运营商。[例句]The royalties enabled theinventorto re-establish himself in business.专利权使用费让这位发明家得以再次立足于商界。[例句]Mrs. Jones's powerful voice interrupted them, announcing avisitor.琼斯太太响亮的声音打断了他们，说有人来访。