one
英 [wʌn] 美 [wʌn]
num./det. 一; (正式用语或表强调，用在hundred、thousand等或度量单位之前)一; (表强调)单独一个，仅仅一个pron. 用来避免重复已提过的或是听者已知的事物的名称; 用于辨别所谈的人或事; 其中的一个人(或事物)
牛津词典
number
det.
一the number 1Do you want one or two?
你要一个还是两个？There's only room for one person.
只有一个人的空间。One more, please!
请再来一个！a one-bedroomed apartment
一间卧室的公寓房I'll see you at one (= one o'clock) .
我一点钟见你。（正式用语或表强调，用在hundred、thousand等或度量单位之前）一
used in formal language or for emphasis before hundred , thousand , etc., or before a unit of measurementIt cost one hundred and fifty pounds.
那东西花了一百五十英镑。He lost by less than one second.
他以不到一秒钟的差距输了比赛。（表强调）单独一个，仅仅一个
used for emphasis to mean ‘a single’ or ‘just one’There's only one thing we can do.
我们能做的只有一件事。（尤指一组中的）一个人，一件事物
a person or thing, especially when they are part of a groupOne of my friends lives in Brighton.
我的一个朋友住在布莱顿。One place I'd really like to visit is Bali.
我真正想去的一个地方就是巴厘岛。（表强调）唯一的一个，最重要的一个
used for emphasis to mean ‘the only one’ or ‘the most important one’He's the one person I can trust.
他是我唯一可以信赖的人。Her one concern was for the health of her baby.
她唯一操心的就是孩子的健康。It's the one thing I can't stand about him.
这是我最不能容忍他的一件事。（用于一般地谈论过去或将来的某个时间）
used when you are talking about a time in the past or the future, without actually saying which oneI saw her one afternoon last week.
我在上周的一个下午见到了她。 One day (= at some time in the future) you'll understand.
总有一天你会明白的。同一个
the sameThey all went off in one direction.
他们都朝同一个方向走了。（代替a或an，表示强调）
used for emphasis instead of a or anThat was one hell of a game!
那一场比赛简直一塌糊涂！She's one snappy dresser.
她的穿着很入时。（与人名连用，表示说话人不认识的人）某一个
used with a person's name to show that the speaker does not know the personHe worked as an assistant to one Mr Ming.
他给一位明先生当助手。
pron.
（用来避免重复已提过的或是听者已知的事物的名称）used to avoid repeating a noun, when you are referring to sb/sth that has already been mentioned, or that the person you are speaking to knows aboutI'd like an ice cream. Are you having one, too?
我想买份冰激凌，你也要一份吗？Our car's always breaking down. But we're getting a new one soon.
我们的汽车老出毛病。但我们快要买新的了。She was wearing her new dress, the red one.
她穿着她的新衣服，那件红的。My favourite band? Oh, that's a hard one (= a hard question) .
我最喜爱的乐队？哦，这可就难说了。What made you choose the one rather than the other?
你怎么选了这个而不是那个？How about those ones over there?
你看那边那些怎么样？（用于辨别所谈的人或事）
used when you are identifying the person or thing you are talking aboutOur house is the one next to the school.
我家的房子就是学校旁边的那座。The students who are most successful are usually the ones who come to all the classes.
成绩最好的学生往往是出全勤的那些。其中的一个人（或事物）
a person or thing belonging to a particular groupIt's a present for one of my children.
这是送给我的一个孩子的礼物。We think of you as one of the family.
我们把你看作家中的一员。（某类人中的）一个
a person of the type mentioned10 o'clock is too late for the little ones .
十点钟对那些小家伙来说就太晚了。He ached to be home with his loved ones .
他渴望着回家与亲人团聚。She was never one to criticize.
她是个从不爱批评人的人。人们；本人
used to mean ‘people in general’ or ‘I’, when the speaker is referring to himself or herselfOne should never criticize if one is not sure of one's facts.
一个人如果对自己掌握的事实没有把握，就绝不该随便批评。One gets the impression that they disapprove.
本人的印象是，他们不赞成。（举止）有趣的人，令人惊奇的人
a person whose behaviour is amusing or surprisingOh, you are a one!
哈！你这个活宝！玩笑；笑话
the jokeHave you heard the one about the Englishman, the Irishman and the Scotsman?
你听没听过那个关于英格兰人、爱尔兰人和苏格兰人的笑话？
