A few scientists have Lately asked a curious question: since we have spent a lot of money on space exploration, why shall we use it to improve the standard of living on the earth?

• 一些科学家近来提出一个奇怪的问题：既然我们在空间探索上化了那么多钱，为什么不能把它用在提高地球上的人的生活水平呢？