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
정부는 기업의 연구 개발을 장려하기 위해 장려금을 지급했다.jeongbuneun gieob-ui yeongu gaebal-eul jangnyeohagi wihae jangnyeogeum-eul jiguhada.The government provided incentives to encourage corporate research and development.