Different people converse with the text differently.Some stay very close to the words on the
page;others take off imaginatively from words,interpreting,criticizing,analyzing and examining.
The former represents a kind of comprehension
that is written in the text,while the latter represents higher levels of comprehension.The balance between these is important,especially for
advanced readers.
这段话中take off imaginatively from words,interpreting,criticizing,analyzing and examining.
怎么理解？

没啥别的意思，就是起飞的意思
但是这里是个比喻，从书本飞向无尽的想象。