He says these particles would offer a more exact method of transporting the short-lived drug, called B-H-three mimetic.

VOA: special.2010.03.16

They have a substantial reality within the fictional context, the mimetic context, of this epic. These are angels.

他们在这篇史诗虚构的模仿得来的，内容中具有极大的现实意义，他们是天使。

耶鲁公开课 - 弥尔顿课程节选