我無識彼言。

pai2 mun1 can2 zap2 zep1.

I don't understand what he's saying. / 我听不懂他说的话。

我無識与学人言。

pai2 mun1 can2 tui2 nui2 cuk2 zep1.

I don't understand what the teacher says. / 我听不懂老师说的话。