This is the 15360th most frequent Turkish word.
sürelerinde
"During their durations" or "in their periods."
The word 'sürelerinde' refers to the durations or periods during which projects are undertaken.
Okul proje sürelerinde çok çalışmamız gerekiyor.
We need to work hard during school project periods.
Here, 'sürelerinde' is used to indicate the timeframe during which the seasons take place.
Dizi sezonlarının sürelerinde oyuncular yoğun bir tempoda çalışıyor.
During the durations of TV series seasons, actors work in an intense pace.
In this case, 'sürelerinde' specifies the durations of events within a broader timeframe of the book fair.