overqualified
adjective uk/ˌəʊ.vəˈkwɒl.ɪ.faɪd/ us/ˌoʊ.vɚˈkwɑː.lə.faɪd/
（对某一工作而言）资历过高的，大材小用的
having more knowledge, skill, and/or experience than is needed (for a particular job)
The problem with employing people who are overqualified for the job is that they often don't stay in it for long. 雇用资历过高的人的问题是，他们通常不会在该职位上做很久。