用非所學 yòngfēisuǒxué to be in a field unrelated to one's studies Origin Definitions Defs Strokes Stroke Words Sentences Sents 用 yòng verb to use To use; to employ; to apply or make use of something to achieve a purpose.非 fēi verb not be to not be; to not belong to; equivalent to 是 shì in its negative form所学 所學 suǒxué noun what one has learned what one has studied or learned; one's specialty or major