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
콩팥은 몸에서 노폐물을 걸러내는 중요한 기관입니다.Kongpat-eun mom-eseo nopae-mul-eul geolleonaeneun jungyohan gigwan-imnida.The kidneys are important organs that filter waste from the body.