[しょうのむしをころしてだいのむしをたすける, shounomushiwokoroshitedainomushiwotasukeru](exp) (id) to sacrifice something small in order to save something great; to lose a leg to save one's life; to kill a small bug and help a large one[Add to Longdo]
[しょうのむしをころしてだいのむしをいかす, shounomushiwokoroshitedainomushiwoikasu](exp) (id) to sacrifice something small in order to save something great; to lose a leg to save one's life; to kill a small bug and save a large one[Add to Longdo]