The permanent population in the core area is estimated to be about 1.5 million by 2050.

到2050年，常住人口规模控制在155万人左右。

But all the other places are actually inhabited by permanent populations of people and some of them are really hugely important places.

但其他所有地方实际上都有常住居民，而且其中一些地方非常重要。

The urban population in Beijing was about 19.161 million, accounting for 87.5 percent of the capital's total permanent population.

其中，城镇人口1916。1万人，占常住人口的比重为87。5%。

And C: In order to be a recognized country, you actually need a permanent population and infrastructure like airports or roads to get that permanent population there which is hard if you don't have any resources.

想要成为被世界认可的国家，你实际上需要有常住人口，还要有机场或道路等基础设施能让常住人口前往那里，如果你没有任何资源，这就很困难。