英和和英

Theory does not go hand in hand with practice.

slovenly inconsiderate reasoning

of character of a person, all talk and no action

theory and practice

crude theories

Theory and practice don't necessarily go together.

the gap between theory and practice

a practical theory

the opposing argument

elaborate, as of theories and hypotheses

with reason or justice

untested theory

a person talks much but takes no action

to connect theory with practice

to set up a theory―theorize

logic unaffected by emotion

the internal contradictions of the theory

I cannot follow your theory.

a theory called determinism

not marked by the use of reason

an act of leaning towards a certain theory

the theoretical capability of recognition

a social theory called {the theory of a struggle}

It is a mere theory, and practically impossible―impracticable―unfeasible.

a theory

to establish a certain theory

These two theories are mutually exclusive.

The theory is not accepted.

construct a theory about

I think your theory does not hold water.