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免費 一起物理 視頻 - 頁面 2

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兩個年輕的同學一起做學校項目
children are learning and doing science experiments in the classroom. two little sisters playing science experiment for home schooling. easy and fun science experiments for kids at home.
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animation of connections and data processing over school children
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students and their teacher conduct a science experiment in a laboratory
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national science day
kids in chemistry class with their teacher 4k
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chemistry formulas over teacher explaining experiment to children in science classroom
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聪明的孩子在家里一起做学校项目
father and daughter playing with wooden puzzle toy on bed
craftsman making leather wallet
animation of mathematical sums over diverse scientists examining liquid in beaker at laboratory
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兩個聰明的小朋友在做工程學的學校項目
一个金发男孩和一个金发小女孩在工艺车间在蓝色地球上贴着环保引文的笔记
scientists examining a fossil
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girl nods looking at asian lab assistant adding reagent
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animation of network of connections with icons over diverse colleagues discussing work in office
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animation of over equations over schoolchildren in classroom
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man calculating mathematics
animation of dna strand and numbers changing, medical data processing on grey background
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animation of mathematical equations over diverse male students doing experiment in lab
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兩個同學在晚上一起做學校項目
examining molecular model, students with mathematical equations animation over classroom background
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mathematical equations and dna structure against two boys performing experiment in laboratory
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kids and science. little boy and girl with face mask using a microscope.
multi-ethnic business people discussing over factory model in modern office 4k
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multiethnic team discussing project of alternative energy in office
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animation of mathematical formulae over scientist
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science of the future
兩個中學學生一起做一個項目
兩個聰明孩子坐在辦公桌旁做項目工作
pov of person lifting a motorized oil pumpjack model to window level at a work desk, checking the electronics
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年輕照顧者在幫助他使用智能手機應用程式時,與戴眼鏡的老年人傾偈
智能儿童<unk>接电路板的近距离拍摄
兩個學生在做工程學的學校項目
two students with female teacher in after school computer coding class learning to program robot vehicle
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education, windmill and woman with children
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asian man and boy in the backyard
close up unrecognizable students experimenting in physics class.schoolchildren
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digital animation of chemical structures spinning against chemical formulas on white background
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animation of dna strand spinning and medical data processing
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positive men looking monitor eating sandwiches at office closeup. lunch break
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一位女士帮助对科学和技术感兴趣的小男孩和女孩建造一个机器人
戴着面具的小女孩建造机器人 1
戴着面具的小女孩们正在建造机器人
乙烯的球和棒模型与双键在黑色实验室长凳上移动
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experiment with colorful liquids and smoke effects
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animation of networks of connections over man using smartphone
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science concept icons moving over grid lines against blue background
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happy indian siblings taking out money from piggy bank
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animation of scientific data processing over robot's arm
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