虽然现在的计划正着眼于淡水藻类。
The existing projects, though, are looking at freshwater algae.
从池塘的浮垢到河床上的水芹和沼泽地上随风摇摆的芦苇，这些淡水藻类和植物为生物提供呼吸的氧气和可吃的食物。
From scum on ponds to water celery on river beds and reeds swaying in a wetland breeze, freshwater algae and plants provide oxygen to breathe and food to eat.
从池塘的浮垢到河床上的水芹和沼泽地上随风摇摆的芦苇，这些淡水藻类和植物为生物提供呼吸的氧气和可吃的食物。
From scum on ponds to water celery on river beds and reeds swaying in a wetland breeze, freshwater algae and plants provide oxygen to breathe and food to eat.
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