为了保证进入室内空气的洁净，进气口可以安装可更换的过滤芯。
To ensure access to clean indoor air, into the mouth can be installed to replace the gas-masks.
繁茂的植被通过过滤空气中的毒素，可以有效地改善室内空气质量。
The lush vegetation helps to improve indoor air quality by naturally filtering toxins in the air.
本实用新型作为室内一种烟气过滤器具，不仅能够保护室内被动吸烟者身体健康，而且可保持室内空气不被污染。
The utility model used as an indoor smoke gas filter appliance not only can protect the health of an indoor passive smoker, but also can keep the indoor air from being polluted.
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