The root of idioms is very shallow ()

Look up idioms with no "root () shallow ()" pattern.

Shallow foundation (non-idiom) refers to a shallow cultural (knowledge level) foundation or a meager economic foundation.

Basis: 1. Foundation; 2. Details and reasons; 3. Buddhism respects roots and roots.

Shallow: 1. Shallow (refers to people's knowledge, cultivation, etc. ); 2. Despise, simple and slow; 3. slight, meager; 4. (social atmosphere) shallow and frivolous.