流失

(of soil etc) to wash away / to be eroded / (fig.) (of talented staff, followers of a religious faith, investment funds etc) to go elsewhere / to fail to be retained

to flow / to disseminate / to circulate or spread / to move or drift / to degenerate / to banish or send into exile / stream of water or sth resembling one / class, rate or grade

to lose / to miss / to fail

brain drain / outflow of talent