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
주정계를 사용하여 알코올 농도를 측정합니다.jujeonggye-reul sayonghayeo alko-l nongdo-reul cheugjeonghamnida.We use the alcoholometer to measure the alcohol concentration.