向河的上游，逆流而上
in the opposite direction to the flow of water in the river
We sailed up river. 我们逆流而行。
Scientists believe that the seal had become separated from its mother in a storm and had swum up the river into a small stream.
We returned to the boat and proceeded up the river.
In spring, these fish swim up river to spawn.
She was last seen swimming up river towards the bridge.
We headed up river despite the warnings.
See also: river