And if, a generation or two ago, the big challenges were ones like getting a man on the moon, perhaps the challenges we need to set ourselves now are ones like eliminating child malnutrition, stopping trafficking, or one, I think closer to home for America or Europe, why don't we set ourselves the goal of achieving a billion extra years of life for today's citizens.
如果说一两代人以前，巨大的挑战 是把人送上月球 那可能现在我们需要应对的挑战 就是消除儿童营养失调，人口买卖 或者是一个对美国或对欧洲来说离家近一点的挑战， 我们为什么不为自己制定这样一个目标 为今天的公民多赢得十亿年的寿命