One study showed that even as few as ten cigarettes a day can damage fertility.
一项研究表明，每天哪怕只抽10支烟也会损害生育能力。
A medium-sized dog will devour at least one can of food plus biscuits per day.
一只中等大小的狗每天至少要干掉一罐食物外加饼干。
One day I'll want to settle down and have a family.
总有一天我会想安顿下来，成个家。
In principle there is nothing that a human can do that a machine might not be able to do one day.
原则上，总会有一天，凡是人能做的事，机器就能做。
I restrict myself to one cup of coffee a day.
我限制自己每天只喝一杯咖啡。
One day he left, disappeared without a trace.
有一天他离开了，消失得无影无踪。
He hopes to write a book about his experiences one day.
他希望有一天写一部关于自己经历的书。
"It's been a battle from day one," Burrell said.
伯勒尔说：“从第一天起就是一场战斗。”
She gives herself one day a week off, on Thursdays.
她每周放自己一天假，在星期四。
One day a week her mother cleaned and aired each room.
每周一天，她的母亲给每一个房间进行清扫并通风。
The day after Christmas is generally a busy one for retailers.
圣诞节次日对零售商们来说通常都是繁忙的一天。
He wrote one or two letters a day.
他每天大概写一到两封信。
One day, a little monkey and a little fox went out to play.
一天，一只小猴子和一只小狐狸出去玩。
One day he took a cover off a dish.
有一天，他揭开了一个盘子的盖子。
One day, a businessman arrived.
一天，来了一个商人。
One day, a visitor came to the village.
有一天，一个游客来到这个村庄。
One day, a UFO come to the earth.
有一天，一个外星飞碟来到了地球。
One day, a police car parked at the company's gate.
有一天，一辆警车停在公司大门口。
One day, a doctor was called in to examine the king.
一天，一位医生被叫来给国王看病。
One day, a man named Tom came to the village where Ms. Smith lived.
有一天，一个叫汤姆的男人来到了史密斯小姐住的村庄。
One day, a crocodile tried to eat a monkey that was next to a river.
一天，一只鳄鱼试图吃掉河边的一只猴子。
One day, I noticed a lump on her skin.
有一天，我注意到她皮肤上有个肿块。
One day she met a girl in green boots.
一天，她遇见一个穿绿靴子的女孩。
Can you imagine that you can play table tennis with a robot one day?
你能想象有一天你可以和机器人打乒乓球吗？
One day he saw a piece of gold on the road.
一天，他在路上看到一块金子。
One day, Jenny picked up a piece of gold.
有一天，珍妮捡到了一块金子。
Then one day, I got a call that my father was ill.
后来有一天，我接到一个电话，说我父亲病了。
One day he took on a girl to count his money.
有一天，他请了一个女孩来数他的钱。
有一天，它会生长成一棵大树。
有一天，它会生长成一棵大树。
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