4K Male instructor in labcoat teaching kids with goggles dipping pipet into flask filling tubes in lab classroom science experiment 股票录像 Male instructor in labcoat teaching kids with goggles dipping pipet into flask filling tubes in lab classroom science experiment 股票录像
4K Male instructor entering mat area kneeling and demonstrating drill with female students training martialarts selfdefense fitness 影视素材 Male instructor entering mat area kneeling and demonstrating drill with female students training martialarts selfdefense fitness 影视素材
4K Male instructor gesturing footwork cues while female trainees mimicking and high fiving on gym mat male instructor gesturing 影视素材 Male instructor gesturing footwork cues while female trainees mimicking and high fiving on gym mat male instructor gesturing 影视素材
4K Male instructor guiding group holding knee hug pose in studio while financial chart overlay fading wellness mindfulness 影视素材 Male instructor guiding group holding knee hug pose in studio while financial chart overlay fading wellness mindfulness 影视素材
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