Milton's similes are notoriously difficult as you no doubt have already experienced.

弥尔顿的明喻众人皆知的,非常难懂，正如你们已经领教过的。

耶鲁公开课 - 弥尔顿课程节选

As you have no doubt experienced, this is a dense and difficult poem, so please reread it innumerable times for Wednesday's class, and in addition to that do the other readings assigned.

你们肯定也觉得了，这首诗很复杂很难懂，所以要一遍一遍的重复读，准备好周三的课，也要读布置的其他材料。

耶鲁公开课 - 弥尔顿课程节选