The idea is that around the year 1800 CE the human population became large enough, around a billion people, that its activities started altering the environment.

这种想法出现于公元1800年左右，当时人口变得足够多，大约有10亿人，人类的活动开始能够改变环境。

youdao

There are twelve festivals around the year.

一年有十二个节日。

youdao

Around the year 1000 A.D., some people from Northwest India began to travel westwards.

公元1000年前后，印度西北部的人开始向西旅行。

youdao

She spends about three hundred days out of the year traveling around the world to discuss her many projects and goals.

VOA: special.2009.11.18

They did manage to establish a kingdom in the land that was known in antiquity as Canaan around the year 1000.

约公元前1000年时他们确实在那片叫迦南的土地上,立了一个自己的王国。

耶鲁公开课 - 旧约导论课程节选

He was a Christian leader who lived,probably wrote about some of this stuff around the year 130 or 140.

他是一位基督教领袖,他大概在主后130后左右写了这个。

耶鲁公开课 - 新约课程节选

Around the year 1200, the Chinese refined the design, creating suan-pan, or the modern, wire-based abacus.

FORBES: No. 2 The Abacus

The real long-range worry is a potential demographic disaster for Social Security, beginning around the year 2010.

CNN: A Debt-Threatened Dream

Ship rats and stoats imported into the country around the year 1870 are blamed for the birds' demise.

BBC: New Zealand scientists record 'biodiversity breakdown'