Examples
wǒ我zhǐ néng只能wèn问zì jǐ自己zhè这duì对qí tā其他suǒ yǒu所有rén人shì bù shì是不是yì huí shì一回事ne呢。
我只能问自己这对其他所有人是不是一回事呢。
I can only wonder if this is the same for everyone else.
自己生了孩子后才明白母爱到底是怎么一回事。
It was not until I had a baby myself that I knew what mother's love is.
知道一门语言是一回事，教这门语言又是另一回事。
To know a language is one thing, and to teach it is another.