1.〈口〉破碎,粉碎
2.〈美〉(火车等的)猛撞
3.失败,破产;崩溃,破灭
1.a collision between vehicles in which all the machines involved are badly damaged
2.complete ruin, collapse, or destruction
1.Astronomers have long thought that the asteroid belt is being ground down through collisions, but such a smashup has never been seen before.
长期以来天文家们推测小行星带会因为碰撞而粉碎但类似的景象以前从未被观测到。