Now environmental pollution has become a very serious problem the world is facing today.
现在环境污染已经成为当今世界面临的一个非常严重的问题。
Soil erosion and soil degenerated by erosion is a main environmental problem in the world.
土壤侵蚀及其导致的土壤质量退化是世界性的重大环境问题之一。
How to control HCB and remove MC is an unsolved problem in the field of environmental science all over the world.
如何有效控制蓝藻水华污染和去除微囊藻毒素是摆在中外环境科学领域的一个难题。
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