The prokarya contains a single kingdom , the bacteria , which is divided into two subkingdoms , the archaea and the eubacteria 原核生物只包括一个界? ?细菌界，它又可以被再分为两个亚界：古细菌和真细菌。
2.
The bacteria are divided into two main groups or subkingdoms : the archaea , or archadbacteria , which often occur in extreme conditions , such as hot springs ; and the eubacteria , which include the vast majority of bacteria 细菌可以再继续划分为两个亚界，一个亚界是古细菌亚界，这个亚界中的很多细菌可以在一些极端环境下生存，例如高温温泉等。
