轉捩點

To turn; to change direction or state; to revolve; to transfer; to move; to rotate; to share content online; classifier for revolutions per minute.

To twist or wrench something; to tear or break apart; a plectrum for playing the pipa; a key part for starting a machine.

dot; speck; spot; to touch briefly; to tap; to mark; to select; to order food; to hint; to nod; a small amount; a bit; o'clock; classifier for small amounts