adj.第一千
n.千分之一
He repeated the sentence for the thousandth time. 他把那句話重復(fù)了無數(shù)遍。
The city will celebrate its thousandth anniversary tomorrow. 這座城市明天將慶祝建城一千周年。
A dust particle weighs only a thousandth of a gram. 一粒塵埃的重量僅有千分之一克。
