์žฅ์ด ๋งค์šฐ ์ข†๊ฐ™์•„์„œ

๊ทธ๋ƒฅ ๋‚ด๋ฆผ๋กฑ ๋ง๊ณ 

๋‚ด๋ฆผ ํ˜„๋ฌผ๋งค์ˆ˜์ค‘

2-3%๋ฐ˜๋“ฑ์ฃผ๋ฉด ๋ฏธ๋ จ์—†์ด ํŒ”๊ณ