Usually viruses have certain kinds of cells they want to infect or that they're capable of infecting.

通常病毒倾向于或者有能力,感染某些种类的细胞

耶鲁公开课 - 生物医学工程探索课程节选

All the cells in your body have the capability of making all the proteins that you make, but they're not all made in every cell.

你体内的所有细胞,都有表达体内所有种类的蛋白的能力,但细胞并不会表达所有的蛋白质

耶鲁公开课 - 生物医学工程探索课程节选