collapse
单词辨析：
通常指房屋等倒塌，强调突然性。
The roof collapsed under the weight of snow.
房顶在雪的重压下突然坍塌了。
A lot of tall buildings collapsed in the earthquake.
许多高楼在地震中倒塌了。
尤指由石头或岩石构成的建筑物或土地崩塌或崩裂。
Many houses crumbled into cinders.
许多房子坍塌，成了废墟。
The old stone wall began to crumble.
那座旧石墙开始崩塌。
The cliff has gradually crumbled away.
峭壁已经逐渐坍塌。
通常指因失去平衡等而倒塌或跌倒。
Many trees fell in the storm.
在那场暴风雨中，许多树都被刮倒了。
The falling wall showered dust on them.
倒塌的墙壁弄了他们一身土。
I fell and hurt my knee.
我跌了一跤，摔伤了膝盖。
尤指人因过于劳累、体弱等而倒下或坐下。
She sank to the floor without the support of his shoulder.
少了他肩膀的支撑，她倒在地板上。
He was stunned and sank to the ground.
他被击昏，倒在地上。
She sank into a chair, exhausted.
她筋疲力尽地倒在椅子里。
相关例句：
Most of the deaths were caused by landslides and collapsing buildings.
大部分死亡是由山体滑坡和建筑倒塌造成的。
The rural people have been impoverished by a collapsing economy.
经济崩溃使农村地区的人们一贫如洗。
The earthquake caused many buildings to collapse.
地震使许多建筑物倾倒。
The economy is in danger of collapse unless far-reaching reforms are implemented.
如果不实施影响深远的改革，经济就面临崩溃的危险。
This system has collapsed in most countries where it ruled
这一体系在其占统治地位的大多数国家都失败了。
A section of the Bay Bridge had collapsed
海湾大桥有一段垮塌了。