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展望世界人口的发展,中国是一个关键的因素,这是因为在1985年,中国有10.4亿人口,占全世界人口的21%及欠发达国家人口的28%。还有一点,中国从高死亡率和高出生率向低出生率
Looking forward to the development of the world’s population, China is a key factor because in 1985 China had 1.04 billion people, accounting for 21% of the world’s population and 28% of the population of less developed countries. Another point is that China has a low birth rate from high mortality and high birth rates