Obviously, it has to be fast enough that the risk of death of people aged N in year X+1 is 10% less than that of people aged N in year X.

• 显然，生物医学进展必须足够快，使得在X+1年时年龄为N岁的人们死亡风险要10%25地低于在X年时年龄为N岁的人们的死亡风险。