短语词组短语quadrillion Btus 万亿英热单位quadrillion Btu 千兆英热单位;万亿英热单位;能源消耗About 35 quadrillion years 约parts per quadrillion 每多部分eine Million Quadrillion 十亿个百亿亿quadrillion cubic feet 多立方英尺 返回 quadrillion