idiom
talk over someone's head
ऐसे तरीके से बात करना जिसे कोई समझ न सके
Meaning
to speak in a way that someone cannot understand
Example
The professor was **talking over our heads** during the lecture.
प्रोफेसर व्याख्यान के दौरान ऐसे बोल रहे थे कि हम समझ नहीं पाए।