The incoherence between the textbooks and the standard of curriculum provides the textbook with living space.

教科书与课程标准之间合理的不一致，为教科书提供了生存的空间。

youdao

So I think once you get to a certain level, it's good to get away from the textbooks and just go to the real living language that people actually speak.

所以我认为，一旦你达到了一定的水平，最好摆脱掉课本，去学人们日常说的真正活的语言。

youdao

Some schools don't even mention costs in their financial-aid award letters, while other schools cite only tuition and fees, ignoring transportation, textbooks and living expenses.

WSJ: Making Sense of College Aid

As I dug deeper into economics textbooks, I began to connect all the dots in other scientific areas, realizing that we were living at the end of the 300-year Industrial Revolution based on fossil fuels and outdated methods of production.

FORBES: Hazel Henderson: Reforming Markets, Metrics and Media