out of the question的意思为：不切实际的，不太值得讨论的，下面是它的用法：

We can't come to the party. This is out of the question.

我们不能来参加聚会。 这是不可能的。

A trip to New Zealand is out of the question this year.

今年去新西兰旅行是不可能的。

Are you saying a request for a raise is out of the question?

你是说要求加薪是不可能的吗？