This is the 11481st most frequent Russian word.
долгосрочных
"Долгосрочных" means "long-term" in English.
The word 'долгосрочных' in this sentence acts as an adjective modifying 'план', describing its quality of being intended for an extended period of time.
Мы пытаемся разработать долгосрочных план для улучшения инфраструктуры.
We are trying to develop a long-term plan for improving the infrastructure.
Here, 'долгосрочных' describes the 'целей', indicating that these goals require extended effort and focus over time.
Ключевая задача - достижение долгосрочных целей компании.
The key task is achieving the company's long-term goals.
In this sentence, 'долгосрочных' serves as an adjective for 'воздействий', specifying impacts extending over a long period.