upriver

向上游、往上游、逆流而上

We paddled upriver for three hours against a strong current.

我们逆流而上划了三个小时，水流很强。

在上游

The old mill stands a few kilometers upriver from the bridge.

那座旧磨坊位于桥梁上游几公里处。

上游的

Several upriver towns were flooded after the heavy rain.

大雨过后，好几个上游的小镇都淹水了。