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
농업의 과학화는 생산성을 높이는 데 기여하고 있다.Nongeob-ui gwahwa-neun saengsanseong-eul nopineun de giyeoha-go itda.The scientification of agriculture contributes to increasing productivity.