The population problem is a world problem.
人口问题是一个世界性的问题。
First of all, people began to realize the population problem.
首先，人们开始认识到了人口问题。
The population problem may be the greatest one in the world today.
人口问题可能是当今世界上最大的一个问题。
The population problem may be the greatest one of the world today.
人口问题也许是当今世界上最严重的问题。
They never knew that the population problem would become so serious.
他们根本不知道人口问题会变得这么严重。
Some have advocated such a procedure as a solution to the population problem.
有些人曾提倡把这一步聚作为解决人口问题的一项办法。
Population growth will make the problem worse. So will climate change.
人口增加和气候变化都会让水危机恶化。
The problem, though, is that these are population studies.
问题是这些仅仅是人口调查。
The use of various energy sources is the final problem stemming from human population growth.
源于人口增长的最终问题是如何使用不同的能源资源。
Injury is an important public health problem which threatens the health of elderly population.
伤害是危害老年人群健康的一个重大的公共卫生问题。
For example, the problem of population, resources, environment, and so on.
如人口问题、资源问题、环境问题，等等。
Thee Population Action International study gives several solutions to the water problem.
人口行动组织的研究报告为世界的水短缺问题提出了几个解决的办法。
What is more important is to resolve the problem of feeding 1.0 billion population.
更重要的是解决了十亿人口的吃饭问题。
The population growth is the main cause of urban problem.
人口的增长才是大城市问题的主要原因。
The population growth is the main cause of urban problem.
人口的增长才是大城市问题的主要原因。
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