0 the number 1 -- (数字)1
1 a member of a group of people or things -- (一群人或事物)中的一个,之一
Our organization is just one of many charities that are providing famine relief in the region. 我们的组织只是给这个地区提供饥荒救济的众多慈善组织中的一个。
Finding a cure for cancer is one of the biggest challenges facing medical researchers. 寻找治疗癌症的方法是医学研究者面临的最大挑战之一。
EMI is one of the world's largest record companies. EMI公司是世界最大的唱片公司之一。
2 used to refer to a time in the future that is not yet decided -- (用于指将来某个未确定的时间)某一
3 used to refer to a particular occasion while avoiding stating the exact moment -- 某一天;某一刻;某一次
4 a single thing; not two or more -- 单独一个;一个
With this model you get a radio, CD player, and MP3 dock all in one. 这种型号的产品将收音机、CD播放机和MP3播放器接口集于一体。
UK Do you think five of us will manage to squeeze into the one car? 你觉得我们5个人能够挤进一辆车里吗?
I think we should paint the bedroom all one (= in a single) colour. 我觉得我们应该把卧室刷成一种颜色。
Eat them one at a time (= separately). 一次吃一个。
5 used when saying there is no other person or thing -- 唯一的一个
Spending time with one's family is never an unalloyed pleasure.
Yoga is said to restore one's inner equilibrium.
I wondered whether there might, after all, be some truth in the old chestnut that one's school days are the happiest of one's life.
One's primary responsibility is to the legal system.
The two sisters are so similar that it's almost impossible to tell one from the other.
If I have to listen to something I don't understand, it just goes in one ear and out the other.