为什么封阳台？
Why is the balcony closed?
1、安全
1. Safety
封阳台后，房屋等于又多了一层保护，能够起到防范的作用；比如社会新闻常常报道高空坠物砸人，封闭式的阳台会减少物体掉落造成的意外伤害。
After the balcony is sealed, the house is equivalent to another layer of protection, which can play a preventive role; for example, social news often reports that falling objects hit people, closed balcony will reduce the accidental damage caused by falling objects.
更重要的是：有小宝宝或未成年儿童的家庭，封阳台也是多了一层保护。
What's more: for families with small babies or underage children, the balcony is also covered with a layer of protection.
2、干净卫生
2. Clean and sanitary
灰尘风沙大到离谱的北方城市家庭自然不必说，封阳台后就大幅度减少了风沙的侵袭。
It's not necessary to say that the family in the northern city, whose dust and sandstorm are so large, has greatly reduced the invasion of sandstorm after the balcony is sealed.
3、空间利用最大化
3. Maximize space utilization