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Check furnace filters , humidifiers and electronic air cleaners monthly .

每月检查热风炉滤网，加湿器和电子除尘器。

Common sources are improperly maintained air-conditioners , humidifiers , plants , pets and pests .

共同来源是保养空调机，加湿器，植物，动物和害虫。

The climate is very dry and we have to put humidifiers in the houses .

气候非常干燥，我们不得不在房子里面放一个加湿器。

In children , very mild symptoms of limited airflow can be helped with cool-mist humidifiers or steam vaporizers .

呼吸道狭窄症状很轻微的儿童，冷，湿或雾化疗法会有帮助。