Repercussions
来自Big Physics
late Middle English (as a medical term meaning ‘repressing of infection’): from Old French, or from Latin repercussio(n- ), from repercutere ‘cause to rebound, push back’, from re- ‘back, again’ + percutere ‘to strike’. The early sense ‘driving back, rebounding’ (mid 16th century) gave rise later to ‘blow given in return’, hence repercussion (sense 1) (early 20th century).
