1·农业面积：813(千公顷)。
Agricultural area: 813 (1000 Ha).
2·文中对G . 813从钟的定时特性作了详尽分析。
This article analyses the timing characteristics of the G. 813 clock in detail.
3·指南车是中国古代一项杰出的创造发明，失传至今已813年。
The South-pointing Carriage was one of the excellent inventions in ancient China. It has been lost for 813 years.
4·同时，英国统计局发布的最新数据表明：英国的患癌人数正持续增加，每日新增病例至少813人。
Meanwhile, latest statistics from the Office for National Statistics (ONS) revealed that cancer is on the rise in England, with at least 813 new cases registered every day.
5·警方还加大力度使被拐卖的儿童回到亲生父母身边，并建立了DNA数据库，此数据库已帮助813名儿童找到了亲生父母。
The police also have stepped up measures to return the abducted children to their biological parents and built a DNA database that has helped 813 children find their biological parents.