比较圆满地解决了单无限和双无限环境及其对应的双链和原过程四者间的相互关系．特别地,澄清了一些误解,纠正了其中的错误结论,为进一步深入研究随机环境中马氏链提供了非常明晰的基本概念．

Relationships among Markov chains in single infinite random environments, Markov chains in bi-infinite random environments,joint Markov chains and original processes are solved more satisfactorily.Especially,some misunderstandings are clar- ified,and the wrong conclusions among them are corrected.These offer very distinct basic concepts for the further study of Markov chains in random environments.