like: 专业 → →
Fachwissen, das Know-how ☊ 
专业知识 ☊ zhuānyè zhīshí 
专业 → ☊ zhuan1ye4 
specialty; specialized field; main field of study (at university); major; CL:门/门men2,个/个ge4; professional ☊ 
Chuyên nghiệp ☊ 舞者 ☊ → 舞女 ☊ → (专业的) 舞蹈家 ☊ → 
dancer Fachwissen, das Know-how ☊ 专业知识 ☊ zhuānyè zhīshí