This is the 41st most frequent Urdu word.
دوران
The Urdu word "دوران" means "during" or "duration" in English.
The word 'دوران' is used here to denote a specific time period (holidays) during which an action takes place (reading).
ہم نے دورانِ تعطیلات ایک کتاب پڑھ لی۔
We read a book during the holidays.
In this sentence, 'دوران' indicates the period of the war during which a statement about the conditions is made.
دورانِ جنگ، حالات بہت خراب تھے۔
During the war, the conditions were very poor.
Here, 'دوران' exemplifies an ongoing time or activity (trip) associated with the action (taking pictures).