For Milton then, at least at that point in his career, his literary career, such a trip without a guide may well have seemed unthinkable.

对于弥尔顿，至少这一点在他的文学职业生涯中,这一趟没有向导指引的旅途是无法想象的。

耶鲁公开课 - 弥尔顿课程节选

The palmer has been Guyon's guide up to this point, his teacher.

他的老师，即那位朝圣者只将他带到洞口。

耶鲁公开课 - 弥尔顿课程节选