specialise in

phrasal verb·1 sense·particle in

Meanings

1

Focus on a particular area of work or study

Why “in”? You step inside the circle. To be in is to belong or take part.

She specialises in family law.
She focuses on family law as her area of work.
The doctor specialises in skin problems.
The doctor focuses on skin problems as an area of work.

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She specialises in family law. What does it mean?

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