用非所學(xué)
be assigned a job that does not correspond to one’s training;be engaged in a profession unrelated to what one has studied;not do what one’s trained to
用非所學(xué)yònɡ fēi suǒ xué
所用的不是所學(xué)的。指學(xué)用不一致。one’s study is completely divorced from his work, be engaged in an occupation not related to one’s training