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
대장은 소화 과정에서 중요한 역할을 합니다.Daejang-eun sohwa gwajeong-eseo jungyohan yeoghal-eul hamnida.The large intestine plays an important role in the digestive process.