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
일차어는 언어학에서 가장 기본적인 언어를 의미합니다.ilcha-eoneun eoneohakeseo gajang gibonjeogin eoneoreul uimihaehamnida.Primary language refers to the most basic language in linguistics.