This is the 807th most frequent Hungarian word.
területeken
"Területeken" means "in areas" or "in fields" in English.
In this sentence, "területeken" refers to the various fields or domains of study and research.
A tudományos kutatás különböző területeken zajlik.
Scientific research takes place in different fields.
Here, "területeken" indicates the specific domains or areas within sports where developments took place.
Az iskola fejlesztést végzett a sport területeken.
The school made improvements in the areas of sports.
In this example, "területeken" denotes the different physical or thematic areas where conservation efforts are effective.