You can use seasoned to describe a person who has a lot of experience of something. For example, a seasoned traveller is a person who has travelled a lot. 经验丰富的
adjective [原级]富有经验的;调好味的;风干的,晾干的(可加工使用 )
There are seasoned professionals who can teach you and show you what to do. 有经验丰富的专业人员可以教你,并向你示范做什么。