自信のある先生か教授。科学者の職業概念。黒板、黒板、バナーのスペースをコピー - ストックフォト＆画像

Confident teacher or professor. People scientist occupation concept. Copy space on chalkboard, blackboard, banner

Elderly teacher. Funny professor or scientist in a elegant suit. Copy space on chalkboard, blackboard, banner

Confident middle-aged male teacher or professor standing in front of a blank chalk board. Funny professor or scientist in a elegant black suit. Teachers day

Confident teacher or professor. People scientist occupation concept. Copy space on chalkboard, blackboard, banner

Closeup face of professor or teacher on blackboard isolated

Elderly teacher. Funny professor or scientist in a elegant suit. Copy space on chalkboard, blackboard, banner

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Old bearded man with long grey beard on smiling face in checkered shirt with red chilli pepper or capsicum on wooden wall background

Senior man. Portrait of smiling happy man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Old bearded man with serious face. Hairdresser with scissors cutting long grey beard in checkered shirt with scissors making new style on wooden wall background

Senior man. Portrait of senior man with white beard over a wooden background