https://blog.jejudoin.co.kr/%ec%a0%9c%ec%a3%bc%eb%8f%84-%eb%a0%8c%ed%8a%b8%ec%b9%b4-%ea%b0%80%ea%b2%a9%eb%b9%84%ea%b5%90-%ec%82%ac%ec%9d%b4%ed%8a%b8-%e3%80%8e%ec%a0%9c%ec%a3%bc%eb%8f%84in-%ec%97%ac%ed%96%89-%ec%a0%9c%ec%a3%bc/ 2019-04-26T12:10:27+00:00 always 0.6