【食而不化】〖shí ér bù huà〗[eat without digesting -- read without understanding; suffer from indigestion]

食官误国资制返，

而违政策搞单干。

不顾先烈共产志，

化公为私害无产。

吃了没有消化。比喻对所学知识理解得不深不透，没有吸收成为自己的东西。Edible no digestion. Metaphor to what one has majored in knowledge well understood not deep not transparent, not have absorb become own of things. 同：食古不化。反：融会贯通。