a double (or dual) role for an actor; the office of a clergyman is twofold; public preaching and private influence- R.W.Emerson; every episode has its double and treble meaning-Frederick Harrison.是什么意思_a double (or dual) role for an actor; the office of a clergyman is twofold; public preaching and private influence- R.W.Emerson; every episode has its double and treble meaning-Frederick Harrison.在线翻译_英语_读音_用法_例句