pileup

名词

一堆，一群人或物体相互堆积在一起，尤其是
After the heavy snowfall, there was a massive pileup of cars on the highway, causing a traffic jam that lasted for hours.
大雪过后，高速公路上发生了一连串的车辆相撞事故，导致长达数小时的交通拥堵。
随着时间的积累，特别是不受欢迎的那种。