求翻译：在我国乃至世界人口剧增，老龄化严重。中国人口在100年内由4亿增加到13亿，而中国人口老龄化日趋严重。由于19世纪二战发生使得世界人口剧降，二战结束后，各国政府和民众由于二战的影响开始计划增加人口数量。在19世纪四五十年代，基本上每个家庭基本上都会生养五个或六个子女，在实行计划生育以后人口数量有所控制，所以现在我国的老龄化趋势日益增加，人口老龄化使中国经济压力很大，是什么意思？

In China and the world population growth, aging seriously. China's population in 100 years, from 4 billion to 1.3 billion, while China's growing aging population. As the 19th century, World War II occurred makes the world's population declined sharply after World War II, governments and the public s

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In our country and even the world population sharp increase, the aging is serious.The Chinese population from 400,000,000 increases in 100 years to 1,300,000,000, but the Chinese population aging is day by day serious.Because the 19th century World War II occurs causes the world population play to f

In our country and the dramatic increase in world population, ageing seriously. Chinese populations within 100 years from 400 million increase to 1.3 billion and Chinese population aging is growing. Due to the sharp decline in the 19th century World War II made the world population, after the second

In China and the world population growth, aging seriously. China's population in 100 years, from 4 billion to 1.3 billion, while China's growing aging population. As the 19th century, World War II occurred makes the world's population declined sharply after World War II, governments and the public s