pile-up
名词 pile-up:
multiple collisions of vehicles
同义词:pileup
动词 pile-up:
collect or gather
同义词:accumulate, cumulate, conglomerate, pile up, gather, amass
arrange into piles or stacks
同义词:pile up, heap up, stack up
get or gather together
同义词:roll up, collect, accumulate, pile up, amass, compile, hoard