expellant bag

例句：

1. 1. Thechemical expellant was used to removethe stain from the fabric.
   这种化学驱除剂被用来从织物上去除污渍。
2. 2.The hospital uses a variety of expellants to keep the air fresh.
   医院使用各种驱除剂来保持空气新鲜。
3. 3. Theexpellant is effective in removing greaseand oil from surfaces.
   这种驱除剂在去除表面油脂和油渍方面非常有效。