1.在公共交通方面,传统的交通工具被公共的宇宙飞船,潜水艇替代,以太阳能为动力.
1.In the field of mass transit,the tradition means of transportation is taken solar energy as driving force by the common space craft ,submarine replacement.
2.但是让人遗憾的是,全球变暖的问题仍未解决,地球上氧气短缺.
2.But regretful being,the global warming problem has not solved yet,on earth oxygen shortage.