hydrophilic filler

例句：

1. 1. The paint is designed to be hydrophilic, so it can easily be wiped away.
   这种油漆设计成亲水性，所以很容易擦拭干净。
2. 2.The fabric is made from hydrophilic materials, which makes it soft and comfortable.
   这种布料是用亲水性材料制成的，所以它既柔软又舒适。
3. 3. Hydrophilic polymers are widely used in water treatment and purification systems.
   亲水性聚合物在水处理和净化系统中广泛应用。