He is world-famous as a comparative linguist.

Natural language understanding is an important field of artificial intelligence.

He is studying late into the night to learn a new computer language.

He is attending a programming school to learn object-oriented languages.

Natural language processing is a technology that allows computers to understand and analyze human language.

He is an amazing polyglot who can speak five languages fluently.

He is an expert in ornithology, studying types of birds all over the world.

He is an expert in speleology and is exploring caves around the world.

He is majoring in meteorology at university.

He is passionate about his research in futurology.