โ†‘์ด๋ฆ„ ๋ฒˆํ˜ธ ๋กœ๊ณ  ๋น„์šฉ, ์ถ•๊ตฌ ์œ ๋‹ˆํผ ์–‘๋ง ์ธ์‡„๋ฅผ ์œ„ํ•œ ํŠน๋ณ„ ๋งํฌ