臨界點

to face; to arrive; to overlook from a height; to approach; to be about to; to copy from a model

Boundary; border; limit; a specific scope or domain; the world; a realm or classification level; to divide or separate.

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