如何向小学生形容river

River is like a flowing body of water that can be found in nature. It is long and narrow, and it moves continuously from one place to another. The water in a river is usually clear and clean, and it can be shallow or deep. Sometimes, rivers are fast and have rapids, while other times, they are calm and peaceful. Rivers are often surrounded by trees, plants, and wildlife, and they provide a home for many different animals and plants. They are also important for humans as a source of water for drinking, bathing, and irrigation. Overall, rivers are a beautiful and natural feature of our world.

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