上游的用英语怎么说？

上游的

• advanced position，upriver，upstream

例句

• The ice blocks up the river, making the upstream water unable to flow. 冰把河道堵住了, 上游的水流不下来。
• Cities upstream use the river to get rid of sewage. 上游的城市将污水排放到河里。
• We also recommend a full day optional excursion to the Upper Douro. 我们还推荐去杜罗河上游的短途自选一日游。
• ...the river police, whose headquarters are just upstream of the Isle St Louis... 总部设在圣路易岛上游的水警
• They actually monitor the movement of the fish going up river. 他们实际上在监测鱼类迁往上游的活动。
• We also recommend a full day optional excursion to the Upper Douro... 我们还推荐去杜罗河上游的短途自选一日游。