not to mention 更不用说；此外还有
He has two big houses in this country,not to mention his villa in France.
We can't afford a car,not to mention the fact that we don't have a garage.
A:I really need your help.
A:I got dumped by Mary, and I know that you are one of her best friends, so..
B:Sorry, I'm busy now, I haven't finished my paper yet, not to mention your stupid thing.
Usher — papers
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