This is the 114th most frequent Ukrainian word.
такі
"Such" or "these."
Here, 'такі' serves to stress the exceptional qualities of the dresses, conveying an enhanced descriptive value.
Вона надягнула такі гарні сукні на святкування.
She wore such beautiful dresses to the celebration.
In this sentence, 'такі' is used to indicate a specific type or kind of friends, emphasizing their qualities—those who help.
У нас є такі друзі, які завжди допоможуть.
We have such friends who will always help.
In this context, 'такі' specifies a preference for a particular kind of books, those with engaging stories.