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
핵융합은 태양에서 에너지를 생성하는 과정입니다.haek-yunghap-eun taeyang-eseo eoneojireul saengseonghaneun gwajeong-imnida.Nuclear fusion is the process that generates energy in the sun.