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
회사는 위기 상황에서 자구책을 마련해야 한다.hoesa-neun wigi sanghwang-eseo jagu-chaek-eul maryeonhaya handa.The company must prepare self-help measures in crisis situations.