But, I also read a poem, and this is kind of a signature-- not my signature, but the kind of course it is.

不过我还读了一首诗,算是一种签名,不是我的签名,是这种课程的

耶鲁公开课 - 1871年后的法国课程节选

The cell divides, and divides, and divides many, many times and that's one of the signature events of embryogenesis until we have many, many cells that make up our bodies.

细胞不断分裂,持续进行,那是胚胎发育中,一个标志性的过程,在那之后,我们就有了许许多多构成我们身体的细胞

耶鲁公开课 - 生物医学工程探索课程节选

These cells can now kill cells that have the correct signature, and the signature is MHC-1 with this foreign antigen associated with it.

而这些细胞现在可以杀伤带标记的细胞,这些标记就是MHC-1表面受体,和与其相联的异己抗原

耶鲁公开课 - 生物医学工程探索课程节选