fifthnum.第五n.五分之一Fifth Battle of Damascus第五次大马士革之战(1148)fifth to seventh century5-7世纪Fifth Air Force in Korea驻韩国第五航空队Fifth - order cumulant五阶累积量fifth coccygeal vertebra第五尾椎fifth generation computer第五代计算机Fifth Counter Encirclement第五次反“围剿”fifth-generation fighter第五代战斗机fifth ordered intermittent五阶停歇Fifth Sunday of Great Lent埃及的圣玛利亚主日大斋期第五主日