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
이 건물은 단열제가 잘 되어 있어서 에너지 효율이 높습니다.I geonmul-eun danyeolje-ga jal doeeo isseo-seo eneoji hyoyul-i nopseubnida.This building has good insulation, so its energy efficiency is high.