specialist knowledge

Translations
специализированные знания
She has specialist knowledge in marine biology.
У неё специализированные знания в области морской биологии.
Definitions
Specialist knowledge refers to a deep understanding and expertise in a specific field or subject area, often acquired through extensive education, training, and experience. This type of knowledge enables individuals to perform specialized tasks, solve complex problems, and provide insights that are not typically accessible to those without similar training.
Words
specialist

adjective
специализированный
knowledge

noun
знания