at one time 曾经/同时
one time only 仅此一次
many times 多次
1. I have only visited that museum one time.
我只去过那个博物馆一次。
2. One time, I saw a shooting star in the sky.
有一次，我在天空中看到了一颗流星。
3. He finished the entire task in one time.
他一次性完成了整个任务。
A: Have you ever been to Japan?
A：你曾经去过日本吗？
B: Yes, but only one time.
B：是的，但只去过一次。
1) 指发生的次数为一
2) 指过去发生的某次经历
3) 强调单一性或非重复性
1. 仅一次
e.g.I only saw him one time.
我只见过他一次。
2. 曾经
e.g.One time, I lived in New York.
曾经，我住在纽约。
phrase
1. Happening or occurring only once.
2. At a particular time in the past.
Synonym: once