We have a growing population and therefore we need more food.
我们的人口在增长, 因此我们需要更多的食物。
The entire population was wiped out by the terrible disease.
所有的居民都被可怕的疾病夺去了生命。
The main impediment to development is the country's large population.
发展的主要障碍是这个国家人口太多。
