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
그 연대학자는 역사적 사건의 시간을 연구하고 있다.geu yeondaehakjaneun yeoksajeok sageonui siganeul yeonguhago itda.That chronologist is studying the timeline of historical events.