堆积 pile up; heap up; accumulate; cumulate; upbuilding; palletize (码垛); congeries; congestion; stockpiling; storing; catervatum; [晶体学] packing; [地质学] accumulation 在他离开期间工作堆积起来了。 work has piled up during his absence. 雪靠墙堆积着。 snow heaped against the wall