I wonder if this power plant has any kind of air filtering system.
我不知道这个热电厂是否装备了空气过滤系统。
The no-fire cigarette and filtering medium are prepared from various natural medicines and plant extract toxicological harmless and beneficial to human health.
无火烟和过滤液是选用多种对人体无毒害且有益于人体健康的天然药物和植物精华配制而成。
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