Definition
Moving or traveling in the opposite direction to a river's current.
逆流而上
They decided to row up the river to explore its source.
他们决定划船逆流而上，探索河流的源头。
Salmon swim up the river every year to return to their birthplace to spawn.
鲑鱼每年都会逆流而上，回到出生地产卵。
We took a small boat up the river, enjoying the beautiful scenery along the way.
我们乘小船逆流而上，沿途欣赏美丽的风景。