pile-up
/ˈpaɪlʌp/noun
informal <非正式>
1
- a crash involving several vehicles多车相撞。
1.1
- a confused mass of people fallen on top of one another, especially in a team game混乱人堆。
2
- an accumulation of a specified thing堆积, 累积：
a massive pile-up of data.
大量数据的累积。