经验丰富的老师向青少年学生讲解课程. 一位中年女性站在教室前面，手里拿着作业，正在授课。学生们坐在课桌旁，认真听讲，在中学里。一位成熟的教授在课堂上与青少年学生交谈，同时拿着试卷。

老师带着一群成年学生在教室里使用电脑在大学图书馆里学习

老师和一位成熟的成年女学生在大学图书馆的桌子旁工作

快乐成熟年长的女性通过视频通话在笔记本电脑上工作，在家工作。

一位愤怒的成熟老师和黑板

微笑的成熟教师肖像

成熟教师在黑板上书写的肖像

愤怒的成熟教师手持魔杖并做出手势

微笑的成熟教师坐在课桌前的肖像

成熟的老师用棍子指着算盘

成熟教师的肖像，在教室里

自信成熟的英语老师指着白板

一位愤怒的成熟教师手持魔杖并做出手势

成熟的老师用橡皮擦擦除一些东西

经验丰富的教师在创意工坊与学生讨论

经验丰富的老师与学生在创意工坊头脑风暴

经验丰富的教师，学生包括拉丁裔、高加索人和非裔美国人

非洲成熟的教师和正在工作的学生

微笑的成熟教师肖像

成熟老师画象类的

秃顶的成熟老师看着并指着黑板上的笔记

成熟的老师拿着一块拼图

显示一个空白董事会的成熟教师

成熟的老师和两个十几岁的学生正在听一位男士做报告

mature teacher standing by board in class holding blue notebook red folder wearing blouse glasses educator classroom podium

在直播中指着纸的自信成熟教师

collage of mature teacher and laptop with online education course on screen indoors portrait computer

现代成熟教师

拿着书和算盘的成熟老师

自信且成熟的老师指着写有箭头和草图的白板

年轻的非裔美国男子看着一位经验丰富的军事训练教官

mature teacher holding tablet computer with words distance learning on screen indoors collage creative

老师手指着一个文件

成熟老师文字某事在笔记本

选择性地关注成熟的教师或演讲者

指着文献的成熟外语教师手

成熟老师画象类的

成熟老师文字某事与铅笔

自信的金发成熟老师向学生解释什么

聚焦于一位成熟教师的手，用铅笔指向文件

站在跨文化学生面前的快乐成熟教师

injured man signs for compensation with his insurance agent african american businessman arm files worker claim lawyer black

female receptionist handing a hotel room key to a female traveler close up of guest takes room key card during check in process at

medical insurance black man with a broken arm meets his labor lawyer and discussing about the injury he sustained while working

woman doing checkin at hotel reception mature just arriving in with her suitcase and receiving information after check copy space

professional black muslim woman and man working together as team at coffee table mature officer interviewing a new islamic hire

happy receptionist giving card key to new guest at hotel desk friendly female handing a room mature woman during business travel

paying using nfc technology by smartphone woman bill through at hotel desk casual customer mobile phone contactless close up hands

guest pay hotel room bill by nfc technology with smartphone woman paying through using at desk casual customer mobile phone

business people checking in at modern hotel reception happy cheerful female receptionist friendly and professional receptionist

female beautiful receptionist looking at camera the hotel portrait of happy standing with crossed arms lobby while smiling

friendly female receptionist invites you to enter at the hotel attractive woman looking camera while welcoming front lobby desk

business people taking notes during convention group of mixed race listening conference black businessman meeting with team

successful black businessman smiling to businesswoman at business conference african american sitting in a row during meeting

black businessman with colleagues applaud at business conference group of happy multiethnic people applauding the end presentation

group of happy multiethnic business people clapping hands during conference successful businessmen and businesswomen applauding at

mature businesswoman talking in a office meeting business female manager guiding employees group of businessman and working

mature businesswoman smiling during brainstorming successful senior wearing eyeglasses while to business team in modern office

mature couple meeting financial advisor senior discussing plans with at modern office male guiding on investment strategies for

businessman shaking hand after meeting with a new client smiling mature man shakes hands during financial advisor senior happy

business people discussing work at office focused businesswoman new project with mature businessman professional woman

confident black businessman advising mature couple on finance african american financial agent in meeting sitting with senior to

african american businessman shaking hands with mature couple happy black handshake senior during meeting to protect their

happy multiethnic business team talking together in office lobby group of professionals sharing conversation while standing and

multiethnic business team discussion during annual meeting professional smiling and sharing ideas after convention businessman

mature businesswoman leading an annual report meeting senior woman leader presenting data to employees during a brainstorming