"So why did he get interested all of a sudden?"— "Search me."

“那么他为什么突然感兴趣了呢？”—“我哪知道。”

《柯林斯英汉双解大词典》

That's partly what you have to develop when you get interested in a field: some sense of curiosity about all the details.

当你对某个领域非常感兴趣的时候，你必须培养这种兴趣：对所有细节的好奇心。

youdao

If someone discovers that they love dance by watching a screen dance, there's a good chance they will get interested enough to buy a ticket to see a live performance.

如果有人因为观看屏幕上的舞蹈而爱上跳舞，他们很有可能愿意购票看一场现场表演。

youdao

I started to get interested in epitaphs. I went online and found these sites where they list epitaphs from cemeteries.

VOA: standard.2009.04.21

That's partly what you have to develop when you get interested in a field: some sense of curiosity about all the details.

当你对某个领域非常感兴趣的时候,你可以培养一种习惯,就是对细节的好奇心

耶鲁公开课 - 金融市场课程节选

How did you get interested in being a bartender?

你为什么会喜欢做酒保呢？

旧金山的调酒师 - SpeakingMax英语口语达人

So, with that being said, I just wanted to start by asking, how did you get interested in this?

NPR: Have Women's Rights Evolved In Pakistan?

Then if you get interested, you're likely to read more poetry.

FORBES: Why not a sonnet?

Our youngest child Neil who is 15-years-old, is starting InnovationGeneration to inspire young people to get interested in science and use innovations to solve grand challenges.

FORBES: The Source of My Greatest Happiness Has Always Been Our Children