disintegrate
/dɪsˈɪntɪgreɪt; dɪs`ɪntəˌɡret/ v[I, Tn]
(a) (cause sth to) break into small parts or pieces （使某物）碎裂, 崩裂
The plane flew into a mountain and disintegrated on impact. 飞机冲向一座山, 撞得粉碎.
(b) (fig 比喻) (cause sth to) become less strong or united （使某物）衰微, 瓦解, 分崩离析
The family is starting to disintegrate. 这个家庭要破裂了.