例如，人类的平均寿命在几千年里几乎没有改变。
For example, the average duration of human life has hardly changed in thousands of years.
一个科学家告诉采访者说，他预计，人类的平均寿命将千年！
One scientist told the interviewer that he expects the average human lifetime to be 1000 years!
另一方面，在医学上，人类将可以解决所有的疾病，人类的平均寿命可以达到125岁。
On the other hand, in medicine, human beings will be able to solve all of the disease, the average life expectancy of mankind can reach 125 years old.
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