2.4๋™๊ธ€์€ 2.0์— ๊ฝ‚์•„์•ผํ•œ๋‹ค๋Š”๋ฐ


๋กœ์ง€๋ณผํŠธ๋„ 2.0์ด ๋” ๋‚˜์Œ?