children elementary school boys conduct chemical experiments with colored liquids glass flasks scientific concept slow |
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| navigate by keyword : biology boy brothers caucasian chemical chemist chemistry child childhood children development education experiments flasks game generation glass hands health healthcare home kid knowledge lab laboratory learn lesson liquid little medical medicine microscope panacea people person pharmacology pouring pupil research school schoolboy science scientific scientists student study syringe tube vaccine young |
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| Children, elementary school boys, conduct chemical experiments with colored liquids in glass flasks, a scientific concept. 4k slow-motion shooting |
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