"one third" or "one-third" ?三分之一"one third" or "one-third" 哪个更常用写那什么时候该用one-third ？

one third or one-third ?三分之一one third or one-third 哪个更常用写那什么时候该用one-third ？ one third one third one third one third of one-third of z one- third less than third-class merits or third-class merit?which one is correct? one ...another...a third...还是the third what’s one third and one half at one third discount 是打几折? a third与one third 有什么异同 one third of population和one third of country的谓语为什么不同?为什么one third of population用ARE,而one third of country用IS ? ____is less than ___A One-third ;two-thirds B One-third;two-third C First-three;first-threes D One-third;one-three one and a third billion是什么意思? twenty-third,fifty-one的基数词! The third one翻译成中文是什么意思 17.The room is about__in diameter as the hall.a:one-third as large b:as one-third largec:as large one-third d:one-third large as