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本世纪比上世纪人类的平均寿命几乎增加了一倍,仅仅从1962年到1990年的28年之中,人类的平均寿命就增加了13.5岁。这是得力于两条措施:一是大规模接种疫苗以及抗生素的发明,因传染病引起的死亡明显减少;二是许多发达国家成功地降低了因心血管病和癌症引起的死亡。除此以外,目前
The average life expectancy of mankind in this century has almost doubled that of the last century. From only 1962 to the 28 years of 1990, the average life expectancy of mankind increased by 13.5 years. This is due to two measures: one is the invention of large-scale vaccination and antibiotics, a significant reduction of deaths due to infectious diseases, and the second is that many developed countries have succeeded in reducing the death caused by cardiovascular diseases and cancer. In addition, at present