“上游的”造句

上游的城市将污水排放到河里。
Cities upstream use the river to get rid of sewage.

我们还推荐去杜罗河上游的短途自选一日游。
We also recommend a full day optional excursion to the Upper Douro.

冰把河道堵住了, 上游的水流不下来.
The ice blocks up the river, making the upstream water unable to flow.

• #上游的