In the last 30 years many cherished values have bitten the dust.

过去30年里许多值得珍惜的价值观已经不复存在。

《柯林斯英汉双解大词典》

In the middle to high latitudes rainfall has risen steadily over the last 20-30 years.

中高纬度地区的降雨量在过去的20到30年间稳步上升了。

《柯林斯英汉双解大词典》

You might be surprised to hear that the number of people sleeping rough in London has doubled in the last five years and has increased by 30% across the rest of the country during the last two years.

听到这些你可能会很惊讶，过去五年中伦敦露宿街头的人数已经翻倍，而且近两年全国其他地方的露宿人数增加了30%。

youdao

In the last 20 or 30 years there have been a couple more specimens.

VOA: standard.2009.12.08

ERRC Programmes Coordinator Tara Bedard has told VOA News there have been dozens of attacks against the approximately "There's been 30 attacks in the last two years.

VOA: standard.2009.08.22

"I was finishing my last semester of law school, so,I guess, check back with me in 30 years and see if he's a litigator, because he would definitely come alive in my corporations classes and he always heard my professors speaking."

VOA: standard.2010.05.05

In China livestock numbers have nearly doubled in the last 30 years, from around 200 million in the early 1970's, to 427 million in 2002.

CNN: Desertification: How to stop the shifting sands

However, in the last 30 years, a handful of businesswomen in India, including Lalita Gupte, Kalpana Morparia, Anu Aga, Kiran Mazumdar-Shaw and Simone Tata, have quietly broken through the barriers of social conformity--both at home and in the workplace--to become successful entrepreneurs and professionals.

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But I really do believe that in the last 30 years, we've seen an explosion in sports.

NPR: Black Athletes Juggle Fame, Social Responsibility