electrocardiography of a heart in irregular rhythm displayed on personal-use (home-use) ecg - rhythm 個影片檔及 b 捲影像00:13
closeup of ballerina in motion, beautiful elegant movement of a flexible ballet dancer in a dance studio. rehearsing an elegant, timeless form of dance, practicing balance, posture and creative moves - rhythm 個影片檔及 b 捲影像00:14