送交者: AI 于 2005-1-14, 16:10:43:
回答: The difference is superficial. You have to "invent" the science 由 008 于 2005-1-14, 15:57:14:
If no one had INVENTED car and TV, car and TV would never been existed. If no one had DISCOVERIED gravity, gravity has been, is and will be there no matter it is discovered or not.