if a surface is stacked with objects, there are large numbers or piles of them on it 放有大量…；放有成叠（或成摞、成堆）… a table stacked with glasses 摆满了玻璃杯的桌子 shelves stacked with files 堆满文件的架子
Idioms
the cards/odds are stacked against you
you are unlikely to succeed because the conditions are not good for you 形势对你不利
the cards/odds are stacked in your favour
you are likely to succeed because the conditions are good and you have an advantage 形势对你有利