There were always battles and wars going on, on the boundaries, the frontiers of the Roman Empire, but within the center of the empire there was an amazing period of peace.

战争永远都在进行，在边界，罗马帝国边境，但在帝国中心却是一派和平盛世。

耶鲁公开课 - 新约课程节选

He's introducing the reader to a mode of vision different from the vision typically permitted him from within the poem's more or less straightforward, linear, narrative boundaries.

他在向读者介绍一种不同于这首诗里,直白的线状叙述的界限,或多或少已经容许他，显露出的设想有所不同的先见之明。

耶鲁公开课 - 弥尔顿课程节选