1. That's a good question.
這個問題問得好!
2. Don't ask me.
這事兒別問我啊。
3. It's not unheard-of.
沒什么大驚小怪的。
4. I can't see your point.
我不明白你在說什么。
5. You've got me there.
你可把我問住了。
6. I've been wondering the same thing.
這事兒我也沒想明白啊。
7. It's a long story.
這事兒說來就話長了。