The underlying assumption was that the time saved would be used instead for activities that would improve the social and economic development of the communities.

相反，潜在假设是节省下来的时间将用于促进社区的社会和经济发展活动。

youdao

The team identified 39 of these traditions that are practiced by some communities but not others. This is a pattern that, at the time, hadn't been seen in any animal except humans.

该研究小组找出了39个传统行为，一些群体有这些行为，但另一个群体却没有。当时，这种模式只存在于人类之中。

youdao

Ecologists use the term "succession" to refer to the changes that happen in plant communities and ecosystems over time.

生态学家使用“演替”一词来指植物群落和生态系统随时间发生的变化。

youdao

"And so they would travel to places where certainly white people in the thirties and forties would not work too much in black communities, because there was so much antagonism between black and white at that time racism toward African Americans.

VOA: special.2010.01.18

They live in communities that at one time or another were safe, but have become dangerous or risky to live in over time because of human progressions that have spread the erosion processes of the coastal wetlands, i.e. refineries, river navigation, etc.

CNN: Your e-mails: Balancing nature, commerce

And right now, leaders from the business, labor, law enforcement, and faith communities all agree that the time has come to pass comprehensive immigration reform.

FORBES: Full Text: President Obama's 2013 State Of The Union Address

And right now, leaders from the business, labour, law enforcement, faith communities - they all agree that the time has come to pass comprehensive immigration reform.

BBC: State of the Union: Obama pledges to reignite economy