差出人
類似のロイヤリティフリーの画像
Child checks his lung function
A 4-year-old boy is studying chemistry, holding in his hand a flask with a blue liquid that moves upward from body heat.
Cheerful boy holds a light bulb in two hands and examines it, the concept of learning and discovery
Night-guard case selective focus. Helps equalize the growing teeth and correct bite. Portrait of the boy with orthodontic silicone trainer. Mobile orthodontic appliance for dental correction.
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