日期:
来源:雅诚德英语网
Bacteria that used oxygen produced by photosynthesis further altered the atmosphere to what we find today.
有的细菌利用光合作用所产生的氧气,进一步改变了大气层,使其成为今天的样子。
Bacteria that used oxygen produced by photosynthesis further altered the atmosphere to what we find today.
有的细菌利用光合作用所产生的氧气,进一步改变了大气层,使其成为今天的样子。