break up into small parts, typically as the result of impact or decay (尤指因冲击或腐败而)碎裂,分裂 when the missile struck, the car disintegrated in a sheet of searing flame. 被导弹击中后,汽车在一片火海中碎裂。 the marriage disintegrated amid allegations that she was having an affair. 据说她有外遇,婚姻因此破裂。 ■(informal)suffer from a mental breakdown (非正式)(精神)崩溃 I thought that when I finished working on the book I'd disintegrate. 我想等我完成这本书的工作时,我也该精神崩溃了。 ■(Physics)undergo or cause to undergo disintegration at a subatomic level (物理)蜕变,衰变 [no obj.]a meson can spontaneously disintegrate. 介子可以自然蜕变。 [with obj.]it has become a relatively easy matter to disintegrate almost any atom. 让几乎任何原子蜕变都变得相对容易了。 ■lose strength or cohesion and gradually fail 逐步瓦解;衰败 their marriage disintegrated. 他们的婚姻逐步破裂了。