diluent expectorant

例句：

1. 1. Thechemical was added to the solvent to dilute it.
   这种化学物质被添加到溶剂中以稀释它。
2. 2. The doctor used a diluent to treat the patient'sburns.
   医生使用一种稀释剂来治疗病人的烧伤。
3. 3. The paint was dilutedwith water before being applied to the wall.
   油漆在被涂抹到墙上之前被用水稀释了。