这种洗衣液中的表面活性剂能更好地去除衣物上的油渍。

The ___surfactant in this laundry detergent removes oil stains from clothes more effectively.

洗涤剂中的表面活性剂能帮助油污和水混合。

The ___surfactant in detergent helps oil mix with water.

医生给呼吸困难的早产儿使用了表面活性剂来帮助肺部发育。

Doctors administered ___surfactant to the premature baby with breathing difficulties to aid lung development.