从17世纪30年代开始，它们就爆发了。

Explode they did, starting in the 1630s.

youdao

机器学习在90年代早期开始进入工业领域。

Machine learning started making its way into industry in the early 90s.

youdao

他开始谈论他叔叔那个年代的乌克兰。

He began to talk about the Ukraine of his uncle's day.

《柯林斯英汉双解大词典》

I first started teaching this course in the late 1970s and 80s when literary theory was a thing absolutely of the moment.

我在20世纪七八十年代时开始教这门课,当时文学理论非常流行。

耶鲁公开课 - 文学理论导论课程节选

Because it was in the 1950's or so, maybe the late 1940's, that people started to discover lithium, even though it had no natural function, it did do something in our bodies.

因为在二十世纪五十年代左右，可能是四十年代末期，人们开始发现锂，尽管不参与人体的正常生理活动，但是它确实会对我们的身体产生影响。

麻省理工公开课 - 化学原理课程节选

I've been here in MIT for thirty years, and in the early nineties I taught the large freshmen physics course, and electromagnetism.

我麻省理工工作三十年了，在上世纪九十年代初,我就开始给大一新生上物理课，以及电磁学。

麻省理工公开课 - 媒体、教育、市场课程节选