They actually monitor the movement of the fish going up river.

他们实际上在观测鱼向上游的迁移活动。

《柯林斯英汉双解大词典》

All the students in Grade Three are going to clean up the banks of the Xiangjiang River.

三年级的所有学生将清理湘江的江岸。

youdao

And you can make this happen just by getting a few of you and gradually crowding up the people around, and you'll see, they're going into a river.

如果想实验的话，你可以让同事叫周围的人聚在一起，然后你就会发现他们会变人流。

youdao

The jeeps travel on rudimentary dirt tracks (built to access Tahiti's network of hydroelectric stations) and skirt sheer drops overlooking vast river valleys while going up hills so steep you feel like gravity is no longer on your side.

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He heard a radio report that the river was going to rush up and flood the town, and that the all the residents should evacuate their homes.

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It's going to dredge the Hudson River to scrape up poisonous chemicals it dumped there years ago.

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