There are two kinds of scarcity, that is, absolutescarcity and relative scarcity.
一般存在两种稀缺：绝对稀缺和相对稀缺。
2
But within the fifth ring because the supply is in absolutescarcity, which makes the price reduction will not too big.
而五环内因为供应处于绝对稀缺，这使得房价下调幅度不会太大。
3
By 2025, 1.8 billion people will be living in countries or regions with absolute water scarcity, and two-thirds of the world's population could be living under water stressed conditions.