They're small molecules that - whose principal function in the body is to carry signals from one cell in the nervous system to another.

它们都是小分子,在体内主要功能是在,神经系统内将信号,从一个细胞传导到另一个细胞

耶鲁公开课 - 生物医学工程探索课程节选

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

The connective tissue is one of those four main types of tissue, they're supporting material - supporting tissues that surround other cells in the body and give the cell - and give the body much of its mechanical property.

结缔组织是四种主要组织类型中的一种,它们是支持物--是,包围在体内其它细胞周围的支持组织,并赋予身体大部分的机械性能

耶鲁公开课 - 生物医学工程探索课程节选