The boats remain at sea for an average of ten days at a time.

这些船平均每次在海上呆10天。

《柯林斯英汉双解大词典》

At that time, we regarded 25 miles as good day's walk and the ability to cover such a distance in ten hours as a sign of strength and skill.

当时，我们认为一天走25英里是很好的，能够在10小时内走完这段距离是力量和技能的象征。

youdao

Ten years ago, I spent three weeks at a summer camp and had the best time of my life.

十年前，我在一个夏令营度过了三周，那是我一生中最美好的时光。

youdao

The director of the FBI at the time, J.Edgar Hoover, made the "Ten Most Wanted Fugitives" list a permanent program in nineteen fifty.

VOA: special.2010.05.05

just exactly a year ago--saying, the best time in at least ten years to buy a house.

在电视上说，一个持续10年的买房子的好时候。

耶鲁公开课 - 金融市场课程节选

Because, as I said, you can only drive one car at a time and if you've got ten of them in the garage, then it doesn't really do you much good.

正如我说的,你只能一次开一辆车,但如果你的车库里有十辆,它实际上并不会给你带来更多的好处

耶鲁公开课 - 金融市场课程节选

For those who've yet to give it a whirl, Babbel uses a mix of repetition, visual cues, spelling exercises and voice recognition, and it does a pretty stellar job of segmenting things into digestible lessons for those who only have five or ten minutes at a time to spare.

ENGADGET

Ten puppies at a time play on the field that is three yards wide by six yards long.

FORBES: The Ins and Outs of Super Bowl 2013's Cute and Furry Competitor: Puppy Bowl IX

Last year his firm printed more than 800, 000 books in runs as small as ten copies at a time.

ECONOMIST: Book publishing in America