No. 2,447 in Russian
полезно
"Полезно" means "useful" or "beneficial."
In a sentence
Много читать полезно для ума.
Reading a lot is beneficial for the mind.
In this sentence, 'полезно' is used to describe something that is beneficial or advantageous for improving intellectual capacity.
Витамины полезны для здоровья.
Vitamins are good for health.
Here, 'полезны' (the plural form of the adjective) describes vitamins as being beneficial for maintaining good health.
Полезно обращать внимание на детали.
It is useful to pay attention to details.
This usage of 'полезно' expresses that paying attention to details is something advantageous and recommended.
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