mother wit 天生的智慧；天资；天生的智力；常识

【例句】
When you have to live by your mother wit, old boy, I hope you may get on better than I do.
老兄，当你需要靠常识生存的时候，我希望你的境遇能比我好一些。

She encouraged me to listen carefully to what country people called mother wit.
她鼓励我仔细倾听乡下人称作常识的话语。