这是前一个提示的必然推论。

This is a corollary to the previous tip.

youdao

他认为，逻辑是必然有效的推论规律的科学。

He thought that logic is the science of necessary and valid inference rules.

youdao

他认为，逻辑是必然有效的推论规律的科学。

He thought that logic is the science of necessary and valid inference rules.

youdao