一回事
yīhuíshì
ㄧ ㄏㄨㄟˊ ㄕˋ
- 1one and the same (thing)
- 2one thing (as distinct from another)
Example
自己生了孩子後才明白母愛到底是怎麼一回事。
zìjǐ shēng le háizi hòu cái míngbai mǔài dàodǐ shì zěnme yìhuíshì
It was not until I had a baby myself that I knew what mother's love is.