Real estate market is a finite competitive market due to the restriction of land.
内容提要受土地要素特性的约束，房地产市场是一个有限竞争的市场。
2
Real right is a kind of liberty enjoyed by the right holder within the scope of legal restriction and the validity of real right is determined by its nature.
物权的效力由物权的性质所决定，而物权是在法律限制范围内权利人所享有的一种自由。
3
Also, there is a real possibility that calorie restriction provides anti-aging benefits that cannot be achieved through exercise alone.