This is my friend, long-time colleague, music librarian extraordinaire and professional French horn player, Eva Heater, who will demonstrate here-- Come on over here right in the center.

这位是我的朋友,长期共事的同事,音乐图书管理员,了不起的专业法国圆号手,伊娃·夕瑟,她将在此演奏,过来,站到中间来

耶鲁公开课 - 聆听音乐课程节选

In this case the shape is - there's a cell body in the center here so this is where the nucleus is and where all the transcription, production of proteins take place here.

在这个细胞中,中间部位是细胞体,细胞核位于其中央,转录以及翻译过程均发生于此

耶鲁公开课 - 生物医学工程探索课程节选