crumble

动词 crumble:

1. fall apart
   同义词：crumple, tumble, break down, collapse
2. break or fall apart into fragments
   同义词：fall apart
3. fall into decay or ruin
   同义词：decay, delapidate

1. The earthquake made the wall sink and start to crumble.
   这次地震把这堵墙震得下陷并开始崩塌。
2. He crumbled the bread in his fingers.
   他用手指把面包捏碎了。
3. Most of the paint had crumbled off.
   油漆大都剥落。

crum.ble

v.（动词）
crum.bled,crum.bling,crum.bles
v.tr.（及物动词）
To break into small fragments or particles.
弄碎：把…弄碎成小块或小粒
v.intr.（不及物动词）
To fall into small fragments or particles; disintegrate.See Synonyms at decay
碎裂，破碎：碎裂成小块或小粒；破碎参见 decay
To give way; collapse:
失败；崩溃：
例句：
an ego that crumbles under pressure.
一个在重压下衰败的时代

来源：
Alteration influenced by crumb
受 crumb的影响
of Middle English cremelen
中古英语 cremelen的变化
from Old English *crymelen [frequentative of] gecrymmian [to break into crumbs]
源自 古英语 *crymelen [] gecrymmian的重复动词 [碎裂成碎屑]
from cruma [crumb]
源自 cruma [碎屑]