This is the 284th most frequent Malay word.
sebahagian
A part; a portion.
The word 'sebahagian' is used to indicate 'some' or 'a portion of' the subject, in this case, the students.
Sebahagian pelajar telah menyelesaikan tugasan mereka.
Some students have completed their assignments.
Here, 'sebahagian' refers to a part of the books present on the shelf.
Sebahagian buku di rak itu adalah miliknya.
Some books on that shelf belong to her.
In this context, 'sebahagian' is used to express 'a part of' something, highlighting the portion of the view observed.