The room often should open window leak, maintain indoor air fresh.
房间要经常开窗透风，保持室内空气新鲜。
Often maintain indoor air fresh bird-flu is normal growth and development one of the important conditions.
经常保持室内空气新鲜是雏鸡正常生长发育的重要条件之一。
Article 1: closed doors and Windows can no longer rely on air conditioning, litre drop in temperature to halt the open window leak, maintain indoor air smooth and fluent, avoid the lack of fresh air.
第一条：紧闭门窗不能长时间依靠空调升降温，要中断开窗透风，保持室内空气畅通流畅，避免缺乏新鲜空气。
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