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1. The cyanobacteria are a type of blue-green algae that can be found in water bodies.
蓝绿藻是一种可以在水体中找到的藻类。
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2. The cyanobacteria play an important role in the nitrogen cycle and contribute to the growth of plants.
蓝绿藻在氮循环中起着重要作用，并有助于植物的生长。
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3. The cyanobacteria are often used as a source of food for humans, as they contain high levels of protein andvitamins.
蓝绿藻通常被用作人类的食物来源，因为它们含有高蛋白质和维生素含量。