Robotics engineer Dennis Hong appears in 'Safe City Seoul… stocking 0 37 2021.01.18 14:26 https://youtu.be/ZfCvpglBCWs + 4 로봇과학자 데니스홍이 전하는 '안전도시 서울' 10개 국어 홍보영상 공개 Robots working as police officers, firefighters and disinfection workers roam the streets of ...