Merced was pondering this problem one day in his student carrel at the Bradbury library.

麦塞德整天都在布拉德布瑞图书馆的学生私人单间里思考这个问题。

《柯林斯英汉双解大词典》

One day in class, the teacher held up an apple.

一天在课堂上，老师举起一个苹果。

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How weird would it be if, one day in the future, everyone had such a car?

如果在未来的某一天，每个人都拥有这样一辆车，那该有多奇怪？

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One day in October of eighteen fifty-nine, Americans were shocked by news of an attack led by John Brown.

VOA: special.2009.06.25

For instance, there's 5000 taco trucks in Los Angeles and 300 people a day go to each one of those.

例如，有5000洛杉矶的塔克卡车,每天由300个人负责驾驶。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

So I used to love going there in the middle of the day when there's no one else there.

我曾经喜欢在中午去那里，那时候没有其他人在。

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Then, one day in the 1990s, she and Mr Franco had lunch with two local Republicans.

ECONOMIST: New Mexico��s governor

Like when she woke up one day in April 2012 and her foot was completely swollen.

WSJ: Foot healed, Blanka Vlasic will return at NY meet

One day in 1914, while he was sitting on a park bench in Washington, D.

NEWYORKER: This Woman��s Work