| 释义 |
population concentration
基本例句
人口集中
Our population is concentrated in the big cities.我国人口集中在大城市里。
The oil industry is marked by an element of danger, hence the siting of refineries at a distance from population centres.石油工业的特征是它有一点点危险性，所以炼油厂的厂址总在远离人口集中的地方。 |