因人而异，汉语成语，意思是因人的不同而有所差异。可以翻译为it differs from man to man，it varies from person to person，vary with each inpidual。
例句：
治疗方法因人而异。
Treatment depends on the inpidual involved.
对疼痛的耐受程度因人而异，差别非常大。
The levels of tolerable pain vary greatly from inpidual to inpidual.