Description: high shelf: an elevated shelf for storing utensils. Tie it up and put it on a high shelf. Metaphor is not necessary.
From: The Book of Jin Yu Yi Zhuan: "This generation should be shelved until the world is peaceful."
For example, if you have a correct theory, just talk about it temporarily and don't implement it, then even the best theory is meaningless.
Mao Zedong's practical theory.
Grammar: formal; As predicate, object and attribute; derogatory sense