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
우리는 질병 확산을 막기 위해 예방책을 마련해야 합니다.urineun jilbyeong hwaksan-eul makgi wihae yebangchaek-eul maryeonaya hamnida.We need to take precautionary measures to prevent the spread of the disease.