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
핵탄두는 군사 전략에서 중요한 역할을 한다.haektanduneun gunsa jeollyeogeseo jungyohan yeoghal-eul handa.The nuclear warhead plays an important role in military strategy.