This is a signal - this passing of phosphorous - is a signal that's used very frequently in intracellular communication.

这是一种信号,一种通过磷酸来传递的信号,这种信号在细胞内通讯时经常被用到

耶鲁公开课 - 生物医学工程探索课程节选

One kind of cellular communication occurs by similar mechanisms to what we were talking about.

细胞通讯中的一种,与我刚才讲过的信号转导的机制相似

耶鲁公开课 - 生物医学工程探索课程节选