That was when I discovered the pudding in the fridge.

就在那时，我在冰箱里发现了布丁。

youdao

That was when I realized I was nervous.

那时我才真正开始感觉到紧张。

youdao

That was when I saw AIDS for the first time. I didn't even recognize him.

那是我第一次目睹艾滋，我甚至没认出大卫来。

youdao

And I remember when I was about twelve, her work and his work permitted us all to do that.

VOA: special.2009.11.23

And that was when I switched my concentration from computer science to philosophy and psychology with a single question: ? how can I become happier?

于是我将研究方向,从计算机科学转向了哲学及心理系,目标只有一个：,如何变得更快乐？

哈佛公开课 - 幸福课课程节选

I met a man the other day who told me that when he was in high school, he had a pen pal.

前几天我遇到一个人，他告诉我在高中的时候，他有一个笔友。

What if 课堂 - SpeakingMax英语口语达人

"That was when I was young and naive in college, " she tells me with an embarrassed smile.

BBC: Palestinian disappointment at Obama presidency

That was when I bought my house, when there was a pullback in the price of real estate.

NPR: Financial Expert Examines Possibility of Recession

My wife strongly suggested I do so, and that was when I was still trying to do pretty much anything she strongly suggested.

NEWYORKER: Swimming