只有这一次他按时到了。

Just for once he arrived on time.

《牛津词典》

据我所知，彼得一生中几乎只有这一次感到害怕。

For almost the only time in his life that I know of, Peter was afraid.

youdao

只有这一次不同：我是那个说“不”的人。

Except this time there was one difference: I was the one saying no.

youdao

- Well, just a moment ago, we did have -- -- and this time I'll use some chalk here -- a moment ago, we did have a picture depicting what was going on when you call the function.

好的，刚才，我们确实有-,这一次我将用一些粉笔-,刚才，我们有一张图描绘了当我们调用函数的时候,会发生什么事情。

哈佛公开课 - 计算机科学课程节选

How would it strike you if you knew nothing about it, if you had never heard of it before, if you open up the covers of this book for the first time?

如果你对新约一无所知，如果你对新约为所未闻，如果这是你，第一次翻开新约，会有什么感觉？

耶鲁公开课 - 新约课程节选

I remember one time I was talking to our CEO and he said, you know maybe we should pay at least one dividend because our employees are forgetting that they own these shares.

有一次我跟首席执行官谈起这事,他说,也许我们应该至少付一次股利,员工们都快忘了他们有股份这事儿了

耶鲁公开课 - 金融市场课程节选