This is the 18204th most frequent Russian word.
челябинцам
The word "челябинцам" means "to the people of Chelyabinsk" (a city in Russia).
In this sentence, 'челябинцам' is used in the dative case to indicate importance or relevance to the residents of Chelyabinsk.
Челябинцам важно сохранить культурное наследие города.
It is important for Chelyabinsk residents to preserve the city's cultural heritage.
Here, 'челябинцам' is in the dative case showing that the sports ground is opened with the residents of Chelyabinsk being the intended audience or beneficiaries.
Новую спортивную площадку открыли для челябинцев.
A new sports ground was opened for the residents of Chelyabinsk.
In this context, 'челябинцами' is in the instrumental case, emphasizing the people of Chelyabinsk as the source of pride for their achievements.