この理論は日本にあてはまる。の英語

This theory is true of Japan.

This theory holds in everything.

This is an important theory.

This belief is prevalent in Japan.

This way of thinking is an idea that doesn't exist in Japan.

This law does not apply in Japan.

a practical theory

So it is in theory

It is theoretically so.

In substance [outline], the theory is as follows [like this].

This theory still holds

This law shall have effect in Japan.

You can't apply this theory to this case.

This scenery looks like Japan.

A theory of that sort will not stand up [hold water].

Theory should go hand in hand with practice.

A theory must be followed by practice.

The same is true of Japan.

I think your theory does not hold water.

The theory is based on mere supposition.

smash a theory

That is normal in Japan.

The theory is generally accepted.

That theory is generally accepted.

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

Practice must go hand in hand with theory.

This theory won't hold water

Practice should go hand in hand with theory.

This theory holds for all irrational numbers

to set up a theory―theorize