The British Hudson's Bay Company also built a trading center on the Columbia and claimed a large area north of it.

VOA: special.2009.02.19

Richmond, Virginia, for example, became a huge slave-trading center by the 1840s and 1850s.

比如里士满和弗吉尼亚,在十九世纪四十年代和五十年代,它们成为了巨大的奴隶贸易中心

耶鲁公开课 - 美国内战与重建课程节选

It had demanded the Columbia River border because of the Hudson's Bay trading center on the river.

VOA: special.2009.02.19

In the seventeen hundreds, Boston was a major trading center.

VOA: special.2010.04.04

He crossed the Rio Grande River. He marched toward Monterrey,the major trading and transportation center of northeast Mexico.

VOA: special.2009.02.26

But India's diamond center is now desolate. Merchants in the once busy trading city say they have transacted virtually no business since last Christmas as orders dry up from Western buyers, who bought nearly 90 percent of their stones.

VOA: standard.2009.04.03