one time

基本解释

But you really should let me treat one time.
不过你确实应该让我请一次客了。
You can only get five books out of the library at any one time.
你一次只能从图书馆借五本书。
One time, when I looked down to my arms during this episode, these looked like male arms including male hair growth.
有一次我低下头看到我的手臂就像一个男人的手臂一样，上面还长满了男人的汗毛。

Naming expert Cleveland Evans explains that many of these names were traditionally female or male at one time or another.
Now Buckle is a forgotten name today, but at one time he was just about as famous as Oswald Spengler who wrote The Decline of the West.
现在巴克尔已经被人们淡忘了，但他曾和写《西方的没落》的,奥斯瓦尔德，斯宾格勒一样著名。
耶鲁公开课 - 文学理论导论课程节选
At any one time, there's about, I think, 50 or 60 different productions in the West End here in London.
任何时候，我想想，大概都有50或者60部不同的成品剧在伦敦西区上演。
廉价看音乐剧的方法 - SpeakingMax英语口语达人

At one time, people were upset about giving executives high fixed salaries not tethered to firm performance.
FORBES: Steering Clear Of The Executive Compensation Bog