to increase in number or amount to a total that is difficult to deal with大量堆积
Cars quickly stacked up behind the bus.
公共汽车后面的小汽车很快排成了长龙。
My bills are stacking up. [=piling up]
我的账单越积越多。
to increase in number or amount to a total that is difficult to deal with大量堆积
Cars quickly stacked up behind the bus.
公共汽车后面的小汽车很快排成了长龙。
My bills are stacking up. [=piling up]
我的账单越积越多。