增減

增减
zēngjiǎn
  1. to add or subtract
  2. to increase or decrease
  3. to go up or go down

CEDICT

to increase and decrease; to add and subtract

Wiktionary

增加或減少。

重編國語辭典

Entry Composition

1 增 zēng (bound form) to increase; to augment; to add to
2 減 jiǎn
  1. to lower
  2. to decrease
  3. to reduce
  4. to subtract
  5. to diminish