a teacher instructs at the front of a classroom while students raise their hands. - 舉手 個影片檔及 b 捲影像00:05
father lifting toddler into air above peaceful lake during golden hour while enjoying playful family moment - 舉手 個影片檔及 b 捲影像00:23
shot in elementary school, hand-raising students while listening to class in class / south korea - 舉手 個影片檔及 b 捲影像00:10
classroom, higher education and people with questions, students and happy with answers, knowledge or learning. group, men or women with hand gesture, scholarship or university for business management - 舉手 個影片檔及 b 捲影像00:08成人學生
students, hand and question with answer in classroom with applause, clapping or support in education. children, learning or problem solving with talking, solution and studying for knowledge at school - 舉手 個影片檔及 b 捲影像00:08
mba students paying attention during class and male student raising his hand to ask a question - 舉手 個影片檔及 b 捲影像00:08學生
black cheerful doctor explaining new concepts during a brain anatomy class to medical students - 舉手 個影片檔及 b 捲影像00:17
asian young chinese entrepreneur asking question at business conference standing among participants - 舉手 個影片檔及 b 捲影像00:20會展中心
female tourist enjoying watching hot air balloons flying in the sky at rooftop of hotel where she is staying during her vacation - 舉手 個影片檔及 b 捲影像00:14風景 - 大自然, 女人, 熱氣球
education, question and learning students in a classroom or high school with group hands for knowledge. scholarship, study and class with arms raised in in college, university or teaching academy - 舉手 個影片檔及 b 捲影像00:08
zoom in on boy answering question in school classroom / provo, utah, united states - 舉手 個影片檔及 b 捲影像00:09
pan young students raising their hands in class / great yarmouth, england, united kingdom - 舉手 個影片檔及 b 捲影像00:17
1939 montage classroom with teacher writing on chalkboard, student using an abacus and a student going to front of class to answer a question / japan - 舉手 個影片檔及 b 捲影像00:14學生
