关键

關鍵
guānjiàn
  1. crucial point
  2. crux
  3. key
  4. crucial
  5. pivotal

classifier: 個

CEDICT

Entry Composition

1 关 guān
  1. mountain pass
  2. to close; to shut; to turn off
  3. to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc)
  4. to concern; to involve
2 键 jiàn
  1. key (on a piano or computer keyboard)
  2. button (on a mouse or other device)
  3. chemical bond
  4. linchpin