fifty-eight num.五十八fifty-dollar bill fifty-cent piece fifty years of age [經濟學]半白fifty two fifty three fifty six fifty seven fifty one fifty nine fifty four fifty fold 五十倍fifty five fifty fifty fifty eight fifty degrees below fifty (adj., n.) fifty n. 五十；五十個；編號爲50的東西 adj. 五十的；五十個的；衆多的fiftieth (adj., n.) fiftieth num.第五十n.第五十(個)adj.第五十的adv.第五十