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- Population aging is the necessary result as the development of population resource, environment and economy keeping improvement, and national health. 人口老龄化是人口资源、环境和经济可持续发展以及国家卫生健康水平提高的社会必然。
- Artificial feeding the baby turtles of Chelonia mydas is an effective way to increase its survival rate and to protect its population resource. 摘要暂养绿海龟稚龟是提高其成活率，保护其种群资源的有效途径。
- This city has a population of more than 1,000,000. 这个城市人口超过一百万。
- A desert has no settled population. 沙漠没有固定的居民。
- There was a steady increase in population. 人口在不断增长中。
- What is the population of this country? 这个国家的人口是多少？
- Disease has decimated the population. 疾病使大部分人死亡。
- The population of the island has sunk from100 to20. 这个岛上的人口从容不100人减少到了20人。
- What is the population of Ireland? 爱尔兰人口有多少?
- There was a swell in the city's population. 该市出现过人口膨胀。
- In ten years the city's population expanded by 12%. 十年之中,该城人口增加了百分之十二。
- The population of this country rose by 10 percent. 这个国家的人口增长了百分之十。
- What is the total population of Japan? 日本的总人口为多少?
- The town has a population of ten thousand. 这个镇有一万人口。
- Our population is concentrated in the big cities. 我国人口集中在大城市里。
- Immeasurable quantity of natural resource was lost forever through misuse. 无法估量的自然资源因被滥用而永远丧失了。
- The country has a population of 100 million. 这个国家有一亿人口。
- The population in this area has increased fourfold. 该地区的人口已增加到四倍。
- The elephant population in that area is falling. 那个地区的大象总数在下降。
- The invaders prevailed over the native population. 入侵者打败了土著居民。
