be sanctioned by something formal ACCEPTto be made acceptable by something 为某事物所认可 a barbaric custom, but one sanctioned by long usage 一种野蛮但由来已久的风俗
be sanctioned by something• The social hierarchy was determined by birth and sanctioned by religion.• The right of some one to exercise power is sanctioned by the organisation's rules.
→ be sanctioned by something at sanction2(1)