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
보존법은 환경을 보호하기 위해 제정되었습니다.bojonbeopeun hwan-gyeong-eul bohohagi wihae jejeongdoeeossseubnida.The preservation law was enacted to protect the environment.