air conditioning purge

例句：

1. 1. The air conditioning system needs to be regularly cleaned and maintained.
   空调系统需要定期清洗和维护。
2. 2.The air conditioning purge can help remove dust and allergens from the air.
   空调净化可以帮助去除空气中的灰尘和过敏原。
3. 3.During the summer, it's important to use air conditioning purge to keep the indoor air clean.
   在夏天，使用空调净化器保持室内空气清洁是很重要的。