许多民歌有 “ 重复句 ”, 即每一段都有规则地重复出现的单独句.Many folk songs have " refrains ", that is, regularly repeated independent elements attached to each stanza.在重图中允许有重边和重自环, 自环是一种特殊的边.In a multigraph both multiple edges and multiple loops...
She was in a bullish mood about the future of the company.她对公司的未来充满信心。Fundamentalists would say crude is bullish whether it's a 10 - week hellogh or low.不管原油是10周的最高点,还是最低点,基本派都是看涨的.The market opened in a bullish moo...