B2 to spend most of your time studying one particular subject or doing one type of business专门研究,专攻;专门从事
More examples
These nurses specialize in the care of the dying.
US marshals specialize in finding fugitives and escapees.
The company specializes in customized computer systems.
She specializes in historical novels set in 18th-century England.
He specializes in breeding large dogs such as Irish wolfhounds.
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net
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