C2 大堆，大量
a large amount of something
I've got a mountain of work to do. 我有大量的工作要做。
There was a mountain of paperwork to deal with.
By this time, he had amassed a mountain of debt.
All that was left of the apartment block was a mountain of rubble.
We were stuck at the airport with mountain of luggage.
The bridge was by now nothing more than a mountain of debris.
See also: mountain (LARGE AMOUNT)