序数词是用来表示几分之一的
比如1/3是 one third, 1/4是 one fourth,等等
几倍数有:twice, thrice, quadruple... 或者就是 two times, three times, four times...
序数词是用来表示几分之一的
比如1/3是 one third, 1/4是 one fourth,等等
几倍数有:twice, thrice, quadruple... 或者就是 two times, three times, four times...