要根据环境污染情况启动空气净化器清洁空气
Start air purifier to clean air according to environmental pollution
比如净化PM2.5污染的空气净化器，最好在大气污染严重或者室内环境污染的情况下使用，可以保证很好的净化效果。如果大气空气质量很好，就没有必要长时间的开启空气净化器。夏季和冬季可以与加湿器联合使用，效果最佳。
For example, the air purifier used to purify PM2.5 pollution is best used in the case of serious air pollution or indoor environmental pollution, which can ensure a good purification effect. If the air quality is good, there is no need to open the air purifier for a long time. Summer and winter can be combined with humidifier, the best effect.