expert; focus on sth.
- 她是个有声望的专家。
She is a reputable expert.
- 他并不以这方面专家自居。
He has no pretensions to being an expert on the subject.
- 专家们正在勘查这个岛的各个部分。
The experts are exploring every part of the island.
- 这种药专治肚子痛。
This kind of medicine is special for gripes.
- 这些珍贵的老虎受到专门法律的保护。
These rare tigers are protected by special laws.
- 他专门研究东方史。
He specializes in oriental history.
- 这个商店专门出售巧克力。
This shop specializes in chocolates.