Stephen Hawking, the famous 1)astrophysicist, says we need to spread into outer space. If we don't, he says, it will be difficult for the world to “2)avoid disaster in the next hundred years, let alone the next t...Stephen Hawking, the famous 1)astrophysicist, says we need to spread into outer space. If we don't, he says, it will be difficult for the world to “2)avoid disaster in the next hundred years, let alone the next thousand or million.”Hawking has Lou Gehrig's disease. He has to speak with the aid of a 3)computersynthesized voice.展开更多
文摘Stephen Hawking, the famous 1)astrophysicist, says we need to spread into outer space. If we don't, he says, it will be difficult for the world to “2)avoid disaster in the next hundred years, let alone the next thousand or million.”Hawking has Lou Gehrig's disease. He has to speak with the aid of a 3)computersynthesized voice.
