To mechanically copy or apply something without truly understanding or adapting it flexibly; to regurgitate without internalizing.
小明在学习新知识时常常食生不化，只是死记硬背，不懂得灵活运用。
When Xiao Ming learns new concepts, he often "eats them raw without digesting," merely memorizing facts without grasping their underlying principles or how to apply them flexibly.
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