water soluble group

例句：

1. 1. The group's research on biodegradable plastics has made significantprogress.
   该小组在可生物降解塑料方面的研究取得了显著进展。
2. 2. The water-soluble polymers areused in various applications such asdrug delivery systems.
   水溶性聚合物被用于各种应用，如药物递送系统。
3. 3. The researchers found that the water-soluble group had a higher concentration of certainelements than the non-water-solublegroup.
   研究人员发现，水溶性组的某种元素浓度比非水溶性组高。