Over the past thirty years, great changes have happened in China.

在过去的三十年里，中国发生了巨大的变化。

youdao

Last year, a study supported by American beef producers found that their industry's environmental impact has decreased over the past thirty years.

去年，美国牛肉生产商赞助的一项研究发现，在过去三十年，该行业对环境的影响有所下降。

youdao

Software development has been remarkably consistent over the past thirty years. There have been refinements along the way, of course, but the basic themes are the same.

软件开发在过去三十年里已经是非常一致。

youdao

"I think that there's been steady growth in workplace wellness programs over the past thirty years."

VOA: special.2011.02.28

Defects have been linked to at least thirty-nine deaths over the past several years.

VOA: special.2010.02.26

Over the past thirty years, startups have been prodigious job creators in this country.

FORBES: The Great Startup Slowdown

Over the past thirty years, no benefactor has contributed more to liberal causes.

NEWYORKER: Schmooze or Lose

We have to face the fact that the old so-called conservative movement in this country is a fractured mess that over the past thirty years has been often tone deaf, behind the curve tactically, and an abject failure from a policy standpoint.

FORBES: Marking The End Of An Era For Conservatives