示例
A：Larry is crafty, what can I do?
B：I have no idea.
A：拉里很狡诈，我该怎么办？
B：我不知道。
A：Who is the last one to leave the office?
B：Sorry, I have no idea. You can ask the guard.
A：谁最后离开？
B：对不起，我不知道，你可以问门卫。