This concept is promptly getting well-known, specially in South Korea, where by the technological landscape is very advanced and cell-initially activities are classified as the norm.?�늘?� ?�테?�에 ?�?�서 경험??바탕?�로 ?�확???��??� 방법???�?�서 가?�드�??�드?�는?�요. ?�용??조금 길어졌는