No. 1,850 in Russian
основным
"Основным" means "main" or "primary" in English.
In a sentence
Основным предметом обсуждения был план развития проекта.
The main subject of discussion was the project's development plan.
In this sentence, 'основным' is used as a predicative adjective to describe 'предметом' (subject), explaining that the subject was the primary focus of discussion.
Он назвал основным приоритетом улучшение качества продукции.
He named the main priority the improvement of product quality.
Here, 'основным' modifies 'приоритетом' (priority), qualifying it as the most important among other priorities.
Важность этого момента остается основным фактором в принятии решения.
The importance of this moment remains the main factor in decision-making.
In the third sentence, 'основным' describes 'фактором' (factor), indicating it as the primary element influencing decisions.
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