Expertise refers to the knowledge, skills, skills or special talents that a person is particularly good at, which is similar to specialty.

For example, I am good at writing, proficient in English, good at singing and dancing, talented in painting, eloquent, good at speaking, communication, and proficient in computer operation and programming. In short, I write my professional skills, skills and specialties according to the actual situation. If you can't master and understand, write "understand" or write the actual level, such as knowing English, or reaching CET-6. If your specialty has won an award, don't ignore it, for example, winning the first prize of the whole school English speech contest in 2000.