词汇	the four-clear movement
释义	the four-clear movement 四清运动
随便看	water quality fluctuation water quality forecast Water quality forecasting water quality goa water quality goal water quality goals water quality grade water quality grade recognition water quality guarantee water-quality guideline water quality identification index water quality identification index method water quality improvement water-quality improvement water quality improvement act water quality index water-quality index water quality indicator water quality indicator buoy water quality indicator retrieval water quality indicators water quality in Hunhe River water quality in river water quality inspection water quality instrument