This paper also explores some rules of inference in classical logic and modal logic, and discusses the validity of these rules of inference in daily life.

与此相关，考察经典逻辑和模态逻辑中的某些推理规则，讨论这些推理规则在日常推理中的有效性问题，是十分必要的。

youdao

This paper also explores some rules of inference in classical logic and modal logic, and discusses the validity of these rules of inference in daily life.

与此相关，考察经典逻辑和模态逻辑中的某些推理规则，讨论这些推理规则在日常推理中的有效性问题，是十分必要的。

youdao