词典释义：
一天；有一天
一天内；一日内；在一天
如果一天；如果哪天；如果那天
I dreamed of living in London one day.
我梦想总有一天住在伦敦
One day he just upped and left.
有一天他突然离开了。
She'll have an accident one day.
她总有一天会出事的。
One day, I'll be rich and famous.
总有一天我会名利双收。
Maybe one day you'll find true love.
也许有一天你会找到真爱。
One day a larger ship anchored offshore.
一天，一艘更大的船在近海抛锚。
《One Day》是美国歌手MatisYahu演唱的歌曲。由Philip Lawr作词，收录在MatisYahu 2010年2月发行的专辑《One Day》中。
《一天》是由罗勒·莎菲执导，安妮·海瑟薇和吉姆·斯特吉斯等主演的爱情电影，改编自英国作家大卫·尼克尔斯的同名小说。影片于2011年8月19日在美国上映。 该片讲述刚刚从学校毕业的德克斯特和艾玛初次相识，为了一个约定，在接下来的20年里，他们每一年的这一天都会见面的故事。
at a particular but unspecified time in the past or future
一天，有一天
一天，一个男孩开始取笑格雷迪
他有一天会成为一位伟大的总统。
And one day, this city is gonna respect us.
总有一天，我们会赢得这座城市的尊重。
Arcane
One day, the legend will be born.
终有一天，传奇将至。
《Dune: Part One》《沙丘》
Then one day, I saw you set down.
突然有一天，你出现了。
《Oblivion》《遗落战境》
The simple life. You'll get there one day.
简朴的生活。总有一天，你也会如愿的。
《Avengers: Age of Ultron》《复仇者联盟2：奥创纪元》
Then one day, you saw something amazing. Muddy puddle.
然后有一天，你看见一些很神奇的东西。泥坑。
《Peppa Pig Season 4》《小猪佩奇 第四季》
One day it'll grow.
有一天它会长大。
《The Hobbit: The Battle of the Five Armies》《霍比特人3：五军之战》
Wait, wait, why does it say one-day rush? Since when do we offer a one-day rush?
等等，为什么他要一天内加急交货？我们什么时候提供加急服务了？
《The Big Bang Theory Season 2》《生活大爆炸 第二季》
Monday, one day. Tuesday, two day. Wednesday, when? What day? Thursday. The third day. Okay? Thank you. Okay.
星期一，一天，星期二，二天，星期三，三天？ 哪一天？星期四，第三天，好吗？谢谢你。不客气。
《Friends Season 6》《老友记 第六季》
Day by day, the plant grows bigger and bigger. Then one day, Grandpa Pig finds something very special.
这株草莓苗一天天地长大。然后有一天 猪爷爷发现了很特别的东西，是草莓！
《Get fluent spoken English in 100 days》《100天养成流利口语》
Hey, you think maybe one day I can get a ride in one of them helicopters?
我可不可以有一天坐一坐你的直升飞机？
《Cars》《汽车总动员》
Day by day, the plant grows bigger and bigger. Then one day, Grandpa Pig finds something very special. Strawberries!
这株草莓苗一天天地长大。然后有一天 猪爷爷发现了很特别的东西，是草莓！
《Peppa Pig Season 1》《小猪佩奇 第一季》
Day by day, the plant grows bigger and bigger. Then one day, Grandpa Pig finds something very special. Strawberries!
一天天地，这株植物越长越大。有一天，爷爷猪发现了一些特别的东西。草莓！
《Peppa Pig》《小猪佩奇（精选版）》
All was well, but, one day, her husband, the light of her life, died.
一切都很圆满，但是有一天她的丈夫，她的生命之光，死了。
《Cinderella》《灰姑娘》
Then one day, I was walking along the Seine, feeling sorry for myself.
然后有一天，我独自走在塞纳河畔，自艾自怜。
《The Walk》《云中行走》
How the hell are we going to make a thousand Penny Blossoms in one day?
我们怎么才能在一天内做出一千个佩妮花花呢？
《The Big Bang Theory Season 2》《生活大爆炸 第二季》
Daddy, stop it. Can't you get through one day without executing someone?
爸爸，不要。你一天不杀人就不舒服吗？
《The SpongeBob SquarePants Movie》《海绵宝宝历险记》
Yeah, it's crazy. One day, they're riding a dinosaur through Central Park, and then the next day they're DJ-ing in Ibiza.
是啊，不可思议。前一天，他们还骑着恐龙穿越中央公园，第二天他们就成了伊比萨的DJ。
《Night at the Museum: Secret of the Tomb》《博物馆奇妙夜3》
You never know. Someone else might want to know the point of it all, one day.
谁能料到呢？总有一天，会有人想知道意义何在。
《An Education》《成长教育》
Which of course is what is so wonderful about them. Anyway, you'll go one day.
这也是它们的优点，不管怎样总有一天你会明白的。
《An Education》《成长教育》
One day, you will perish. You will lie with the rest of your kind in the dirt.
终有一天你将消亡，你将和自己的同类一起葬于黄土之下。
《Westworld Season 1》《西部世界 第一季》