collapse of shell

例句：

1. 1. The bridge collapsed underthe weight of the snow.
   桥梁在雪的重量下崩塌了。
2. 2. The economy is collapsing due to the pandemic.
   由于大流行，经济正在崩溃。
3. 3. Theold building was collapsing and needed immediate repair.
   这座旧建筑正在崩塌，需要立即修复。