中科新闻网刷毛机刷毛辊:请对移民火星提几个观点
来源：百度文库 编辑：中科新闻网 时间：2024/05/02 11:41:45
用英语,持反对观点.
简洁
简洁
For my part, I reckon it as an dangerous case and of course, even impossible. A simple reason is that there is no way to conquer the problem of gravity which is vital for living conditons.