Many of us then expected a lunar base, even an expedition to Mars, within 30 years.

我们许多人因此都期待着在三十年内完成月球基地的建设，甚至实现火星探险。

youdao

If this trend is not stopped, we may have virtually ice-free Arctic within 30 years.

如果不阻挡这样的趋势，北极在30年内可能就完全没有冰雪了。

youdao

Within 30 years, the planned community, Dongtan, would grow to accommodate half a million people.

按照为期30年的规划，东滩社区将容纳50万居民。

youdao

After initially resisting the government's push, the grandes ecoles say they will try to meet the 30 percent goal within three years.

VOA: standard.2010.02.02

Within 30 years, a summer in Illinois would feel like summer in Oklahoma today.

ECONOMIST: What happens if the Great Lakes get hotter

Within 30 years there was hardly a sturgeon left in the Elbe or the Delaware.

FORBES: Caviar Emptor

Silver is rare - Some estimates suggest that our global resources may be depleted within 30 years.

BBC: Smelly socks raise silver stink