You'll note in this passage from Areopagitica that Milton himself calls Spenser a teacher.

你们可以在《论出版自由》的文章中看到,弥尔顿称斯潘塞为老师。

耶鲁公开课 - 弥尔顿课程节选

It's not that the teachers are there for the income, but they need money too to live.

老师们并非为收入而来，但是他们也需要钱去过生活，

哈莱姆的变迁 - SpeakingMax英语口语达人

And now, I am a mentor helping you to succeed.

如今我是为你的成功助一臂之力的老师。

I was 课堂 - SpeakingMax英语口语达人