決してその計画は実行出来ないだろう。の英語

Under no circumstances can the scheme be put into practice.

This plan is impossible to accomplish.

It is impossible to put the plan into practice.

That plan will probably fail in the long run.

There is an impossibility in this plan.

a fantastic plan

I cannot advance in the same way as that plan.

I'm afraid the project wouldn't pay off.

Those plans won't really go as hoped.

I cannot advance in accordance to that plan.

If anything goes wrong, this plan may not be feasible.

I cannot approve the project.

an impracticable scheme

an unrealizable plan

The plan is bound to succeed.

Put the plan on the scrap heap.

The plan is bound to succeed.

an inoperable plan

I had no opportunity of carrying my design into execution.

Little did I imagine that my plan would go wrong.

Such a plan is bound to fail.

I must fix our plan.

a plan not worth considering

The plan was destined to miscarry.

The plan is not mature.

The plan is bound to succeed.

That plan ended wastefully.

That is not a good plan.

The plan isn't a starter, I'm afraid.

It's too late to draw back from the plan.