When eutrophic condition of water body is serious, algae on water surface proliferate and cover the water surface flakily to form water blooms or red tides.
水体严重富营养化时，水面藻类增殖，成片或成团地覆盖在水体表面，形成水华或赤潮。
When eutrophic condition of water body is serious, algae on water surface proliferate and cover the water surface flakily to form water blooms or red tides.
水体严重富营养化时，水面藻类增殖，成片或成团地覆盖在水体表面，形成水华或赤潮。
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