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In 2010, the world's population was about 6.8 billion.
2010年，世界上的人口大约有68亿。
More than three billion people live in Asia now.
现在有三十多亿人口都生活在亚洲。
That's almost half of the world's population.
那几乎占了世界人口的一半。
China has the largest population in the world, and about one fifth of the people in the world live in China.
中国是世界上人口最多的国家，全世界大约五分之一的人都生活在中国。
Because of the large population, there is less living space for each family.
因为人口太多，每个家庭的生活空间都变得更小。
And it is difficult for lots of people to find jobs.
很多人都很难找到工作。
At the same time, the large population has caused many other difficulties for the whole nation.
与此同时，人口太多还给国家带来了很多其他困难。
For example, it is hard for China to supply energy and water to satisfy people's daily needs.
例如，中国很难提供人们日常生活所需的能量和水源。
Most cities are more crowded than before, and the traffic is much heavier.
多数城市都比以前更拥挤，交通也比以前更拥堵。
Natural environments are becoming worse and worse.
自然环境变得越来越差。
The large population has been a serious problem.
人口过多成了一个很严重的问题。
So far, our government has taken many measures to control the population.
目前，政府已经采取了很多措施来控制人口。
One is known as the one-child policy.
有一项是计划生育政策。
It has worked well in controlling China's population.
它在控制中国人口方面颇有成效。
Thank to the policy, China is developing quickly and people's living conditions are improving rapidly.
多亏了计划生育政策，现在中国发展很快，人们的生活条件也大幅提升。
However, the population problem is still serious in China.
但是，中国的人口问题依然很严重。
We still have a long way to go.
我们任重而道远。
