This is the 16266th most frequent Russian word.
расширяют
"Расширяют" means "expand" or "widen" in English.
This sentence illustrates the verb 'расширяют' in the sense of 'extending' or 'broadening' capabilities.
Использование новых материалов расширяет возможности конструкции.
The use of new materials broadens the capabilities of the construction.
Here, 'расширяют' is used to express the idea of broadening an abstract concept, such as 'horizons'.
Современные технологии расширяют горизонты в науке.
Modern technologies expand the horizons in science.
In this sentence, 'расширяют' refers to the action of expanding a domain or range.