Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
그래프에서 x축의 횡선은 데이터의 값을 나타냅니다.geuraepeun xchug-ui hoengseun-eun deiteo-ui gadeul-eul natanabnida.In the graph, the abscissa of the x-axis represents the values of the data.