fluent in (a language)

Translations
свободно владеющий (языком)
She is fluent in Spanish.
Она свободно владеет испанским.
Definitions
Having a high level of proficiency in speaking, writing, and understanding a particular language, allowing for smooth and effective communication.
Words
fluent

adjective
свободно владеющий
in

preposition
на
a

article or possessive pronoun
неопределённый артикль
language

noun
язык