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
농업에서 점적적하물을 사용하여 물을 효율적으로 공급합니다.Nongeobeseo jeomjeokjeokhamul-eul sayonghayeo mul-eul hyoyuljeog-eulo gongbuhamnida.In agriculture, drip irrigation is used to supply water efficiently.