What better suggestion is there for what we could point to as the metaphysical glue, ? the key to personal identity?

还有什么更好的东西,我们可以用来,作为形而上粘质，作为人格同一性的关键？

耶鲁公开课 - 死亡课程节选

The glue, the key to identity across time for cars, is being the same hunk of stuff.

粘质，作为贯穿时间的车,其质的关键，就是要保持原来的这一大块。

耶鲁公开课 - 死亡课程节选

Now, how they carry signals is that these neurotransmitters act as ligands.

它们传递信号的原理如下,神经递质作为一种配体

耶鲁公开课 - 生物医学工程探索课程节选