YOU SAID:
It is impossible to say how first the idea entered my brain
INTO JAPANESE
アイデアが最初に私の脳に入った方法を言うことは不可能です
BACK INTO ENGLISH
It's impossible to say how the idea first got into my brain
INTO JAPANESE
アイデアが最初に私の頭に浮かんだ方法を言うことは不可能です
BACK INTO ENGLISH
It's impossible to say how the idea first came to my mind
INTO JAPANESE
そのアイデアが最初に頭に浮かんだ理由を言うことは不可能です
BACK INTO ENGLISH
It's impossible to say why the idea first came to mind
INTO JAPANESE
なぜそのアイデアが最初に頭に浮かんだのかを言うことは不可能です
BACK INTO ENGLISH
It's impossible to say why the idea first came to mind
You've done this before, haven't you.