primitive atomosphere

• 原始大气(层)

primitive atomosphere的用法和样例：

例句

1. Miller thought earlier that the primitive atmosphere must be free of oxygen since oxygen may quickly destruct the randomly formed amino acids, preventing the formation of proteins.
   米勒把原始大气想象成是完全无氧的环境，因为氧气会迅速破坏随机产生的氨基酸，防止蛋白质的形成。