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免費 学术界 視頻 - 頁面 2

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金融專業人士研究股市統計數據
多元文化的大學生在第一年級
shocked senior teacher reading e-mail on laptop, sad about project funds decline
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animation of mathematical equations over stack of books
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group of happy multiracial preschool students in mortarboard and gown greeting their teacher.
animation of globe with network of connections over shelves with books in library
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嚴肅的女性專業會議與兩位分析數據的商人
close up of open copy of the quran on stand at home with man sitting behind
教育的概念 (教育概念)
stack of old books
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一位专注的非洲裔美国教授在图书馆的笔记本电脑上打字
young asian male student reading book in library
學生在圖書館用筆記型電腦打字的慢速拍攝
自然世界 2 字
man playing chess in a library
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animation of text and world map over books on desk
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stacked books
close up low angle of an electric fan blowing the open pages of a book
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animation of data processing with globe over files
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close up of open copy of the quran on stand at home with woman sitting behind
librarian at work in the library
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animation of mathematical equations moving over library
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一群快乐的幼儿园学生穿着砂<unk>板和长袍
有信心黑人金融经纪人向团队提供咨询
animation of a turning globe with icons surrounding
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group of happy multiracial preschool students in mortarboard and gown. they are talking and holding diplomas. one of the students says hi to another one.
scientists taking notes in a lab
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professors discussing in the library
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close-up of book pages being flipped by a hand adorned with a ring and polished nails, dressed in black clothing, the background is blurred
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animation of financial data processing over books and landscape
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world book day celebration with pile books and earth planet
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group of happy multiracial preschool students in mortarboard and gown. they are sitting and holding diplomas.
professors studying in a library
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小鎮圖書館
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the old man reading a book, learning knowledge, doing research is thoughtful.
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mathematical symbols and diagrams against stack of books
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archaeologist's magnifying glass on an old book in a office with a library in the background
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business meeting discussion
monkeys typing in a library
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金融專業人士提供諮詢
close-up of hands flipping through book pages, with polished nails adorned with rings, wearing black clothing, background blurred with bokeh effect
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man playing chess in a library
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環境教育 第2日
環境教育 第4日
笑容的韓國男人在圖書館裡跟一個女人說話 4
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senior businesswoman addressing team meeting shot on r3d
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carpenter master measures wood with meters.
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animation of spots and data processing with world map over books on shelves in library
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animation of data processing over library
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close-up of book pages being turned by a lady with well-manicured nails adorned with a ring, showcasing the action of reading on a sunny day with a soft blurred background effect
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