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

VOA: special.2009.02.19

And there is a bridge at the University of British Columbia that crosses a river that runs through campus and the rickety-- There's actually two bridges.

在英国伦敦剑桥大学有一座桥,横跨流经校园的一条河-,河上面，其实有两座桥。

耶鲁公开课 - 心理学导论课程节选

He said Britain would accept nothing but the Columbia River as the southern border of British Oregon.

VOA: special.2009.02.19

All south of it -- including the Columbia River -- would belong to the United States.

VOA: special.2009.02.19