Chinese phrase
哪一部分？ nǎ yí bù fèn
Meaning
Which part?
When to use it
This asks which part is unclear. It is a simple question used in class or while discussing an assignment.
Example dialogue
这道题我看了半天还是不懂。 zhè dào tí wǒ kàn le bàn tiān hái shì bù dǒng
I have been looking at this problem for a long time, but I still don't understand it.
你不懂哪一部分？ nǐ bù dǒng nǎ yí bù fèn
Which part don't you understand?