having fallen down or in suddenly, often after breaking apart （突然）倒塌，坍塌 collapsed buildings 坍塌的建筑物
having failed suddenly or completely 突然失败；崩溃；瓦解 a collapsed investment bank 破产的投资银行
having decreased suddenly in amount or value （突然）降价，贬值；暴跌 a collapsed currency 崩溃的货币
- (of a lung or blood vessel)
having fallen in and become flat and empty （肺或血管）萎陷 a collapsed lung 萎陷的肺