relating to ideas or imagination rather than experience, real situations, or actions

Traditional education involved learning a lot of non-practical stuff.

I don't usually read non-practical books. 非实用的书我一般不看。

involving writing or talking rather than doing things

The class sizes for non-practical subjects have steadily increased.

I got a high score on the non-practical part of the test. 我在考试的非实践部分获得了高分。