1. She's in the dark about how this machine works.
她根本不知道该怎么操作这个机器。

2. He is a stranger to our language.
他完全不懂我们的语言。

3. It is all Greek to me.
我对此一窍不通。

4. When it comes to cooking, I know nothing.
说到煮饭，我一窍不通。
说到什么：when it comes to /when it refers to
5. The ideas she espoused were incomprehensible to me.
她信奉的这些观念对于我来说都很难理解。

6. That computer nerd is a total social misfit.
那个只会玩电脑的呆子对人情世故一窍不通。

7. For all my advice she was never the wiser.
虽然我全力指点，她还是一窍不通。

8. Mathematics is a closed book to me, I'll never understand it.
我对数学一窍不通，从来都搞不懂。

9. Golf is one of his blind spots and he's proud of it.
他对高尔夫球一窍不通，但对此他还感到挺自豪的。