關鍵點

mountain pass; to close or shut; to turn off; to concern or involve; to confine; to collect or receive; surname.

A key for a lock; a button on a keyboard or device; a crucial element or part of something; a chemical bond.

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