教授、化学者、生物学者、男性は、講堂に暗い廊下で歩いている、入って、学生の前で講堂で授業を開催し始め、学生の前で講堂でレッスンを始め、眼鏡の教授、白い医療用ローブで、ジェスチャー、ひげを生やした教授 - ストックフッテージ＆ビデオ

Professor, Chemist, Biologist, Male, Have Closed the Door, Opened the Door, Entered the Classroom, Closeup, Began the Lesson, teacher is Holding the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Tribune, Teacher's Desk, man is gesticulating, turning back, green blackboard on the wall is behind the

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Tribune, Teacher's Desk, took the glasses off, talking, gesticulating, turning back, green blackboard on

Professor, Chemist, Biologist, Teacher is Holding the Class,Having Speech, Slap His Palm on the Tribune, water tap, sink, professor in white medical robe, in glasses, daytime, green blackboard, indoor, light from the windows, door is behind the

Hotel or Motel Maid

Rear view of a young businesswoman wearing a dark suit walking in a hotel lobby and opening a glass door. Tracking real time establishing shot

Professor, Chemist, Biologist, Male, Have Closed the Door, Opened the Door, Entered the Classroom, Closeup, Began the Lesson, teacher is Holding the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Tribune, Teacher's Desk, man is gesticulating, turning back, green blackboard on the wall is behind the

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Tribune, Teacher's Desk, took the glasses off, talking, gesticulating, turning back, green blackboard on

Professor, Chemist, Biologist, Teacher is Holding the Class,Having Speech, Slap His Palm on the Tribune, water tap, sink, professor in white medical robe, in glasses, daytime, green blackboard, indoor, light from the windows, door is behind the

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Teacher's Desk, man is gesticulating, green blackboard on the wall is behind the teacher, Walking toward

Professor, Male, Chemist, Biologst is Holding Lecture, Class, Lesson, Teacher at the Tribune, is pulling up clothes under the medical robe, talking, gesticulating, walking by auditorium, professor in glasses, man with beard and mustache, Students in