基本解释[希]气同根派生 英汉例句Keywords new distribution;snail;Ferrissia wautieri;Physa acuta;Taihu Lake; 新分布;楯螺;尖膀胱螺;太湖;Keywords sludge reduction,Aeolosoma hempfichicii,physa,activated sludge,quinone profiles; 污泥减量;红斑顠体虫;卷贝;活性污泥;醌指纹;Physa acuta 囊螺