This is the 4775th most frequent Turkish word.
dolduğunu
"Filled" or "has been filled."
The word 'dolduğunu' shows that the box 'has become full', indicating a completed state.
Kutunun tamamen dolduğunu fark ettim.
I noticed that the box was completely full.
Here, 'dolduğunu' signifies the act of the eyes filling with tears, implying an emotional state.
Onun gözlerinin yaşlarla dolduğunu hissettim.
I felt that his eyes were filled with tears.
In this sentence, 'dolduğunu' conveys that the parking area 'has been filled', describing a completed action.