Portrait of pensive mature man thinking about new idea, looking at lightbulb above his head isolated on gray wall background

Cognitive skills concept, old man vs young person. Senior man and young guy looking at bright light bulb isolated on gray wall background

认知技能概念老人VS年轻人的高级男人和年轻人看着明亮的灯泡孤立在灰色的墙壁背景

认知技能概念老人vs年轻人的高级男人和年轻人看着明亮的灯泡孤立在灰色的墙壁背景

图像库的认知技能概念老人VS年轻人的高级男人和年轻人看着明亮的灯泡孤立在灰色的墙壁背景 图像 Image 52660394.

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https://previews.123rf.com/images/sifotography/sifotography1602/sifotography160200041/52660394-认知技能概念老人vs年轻人的高级男人和年轻人看着明亮的灯泡孤立在灰色的墙壁背景.jpg