hand showing the middle finger and flipping off the camera cut out on black background - 舉手 個影片檔及 b 捲影像00:18黑色的背景
african american pupil in classroom raising hand to ask question to the teacher - 舉手 個影片檔及 b 捲影像00:10
woman with braided hair holding smart phone while traveling through subway train - 舉手 個影片檔及 b 捲影像00:05
woman, teacher and students with hands up for question in school classroom with reading book, english or learning. educator, children and studying lesson with knowledge answer, discussion or group - 舉手 個影片檔及 b 捲影像00:11初中
woman student taking notes and asking question to teacher in adult education classroom - 舉手 個影片檔及 b 捲影像00:10
female mba student raising her hand during class to ask a question to male teacher - 舉手 個影片檔及 b 捲影像00:09
black male teacher asking questions to his students during a brain anatomy class in med school - 舉手 個影片檔及 b 捲影像00:15學生
man giving a project presentation, asking a question and colleagues raising their hands - 舉手 個影片檔及 b 捲影像00:17辦公室
back view multiracial active asian seminar participant raise hands during business conference sharing session - 舉手 個影片檔及 b 捲影像00:08
foreground focus on schoolgirl as children raise theirs hands to answer teachers question - 舉手 個影片檔及 b 捲影像00:11
rear view of friends wearing white bathrobes raising hands with sparklers at dusk - 舉手 個影片檔及 b 捲影像00:09天空
happy preschoolers following their teachers lead raising their hands shouting and smiling - 舉手 個影片檔及 b 捲影像00:06
cheerful teacher asking his diverse students in age and race a question while they all raise their hands - 舉手 個影片檔及 b 捲影像00:13學生
boy and girl of various ethnicities attending an elementary school wearing casual attire. raising a hand in response to a teacher question. learning in class is amusing.elementary internatinal school concept. - 舉手 個影片檔及 b 捲影像00:14學生
high schooler raises hand as female teacher with prosthetic leg instructs class - 舉手 個影片檔及 b 捲影像00:13
teacher with prosthetic leg calls on high school student with hand raised in class - 舉手 個影片檔及 b 捲影像00:08
boy raising hand and answering while studying with classmates during q ans a session in classroom - 舉手 個影片檔及 b 捲影像00:12
foam fun glove hand with number 1 text and dad title on blue background in 4k resolution - 舉手 個影片檔及 b 捲影像00:05手指
protester holds up a "black lives matter" sign as others chant "hands up don't shoot" on may 27, 2020 in los angeles, california. the protests were... - 舉手 個影片檔及 b 捲影像00:10
closeup of african black child, a 7-year-old boy playing a slider with his arms raised at the outdoor playground. - 舉手 個影片檔及 b 捲影像00:09滑梯
