出典:Wikipedia
You may not be able to do that.
You can't do that.
That's impossible, I should say.
You should be able to do that.
The only thing I can do is that.
Regretfully it is not possible.
You should be able to do that.
That is not possible anymore.
No, you can't do that.
できません
そうはいかん
まあ無理ですな。
That is not to be done―impossible―impracticable.
できもしないこと
That can not be
I am helpless.
それは無理です