This is the 13872nd most frequent Russian word.
областью
"Областью" means "by the region" or "by the area."
In this sentence, 'областью' (field) is used to represent a domain or area of academic inquiry.
Математика является областью науки.
Mathematics is a field of science.
Here, 'областью' (field) refers to a specific scope or domain of study or investigation.
Это не совпадает с областью наших исследований.
This does not align with the field of our research.
In this example, 'областью' (region) relates to a geographical area or territory.