n. an abrupt failure of function or complete physical exhaustionn. a natural event caused by something suddenly falling down or caving inv. break down, literally or metaphoricallyv. fold or close up
n. 崩溃, 倒塌, 虚脱vi. 倒塌, 崩溃, 瓦解vt. 使倒塌, 折叠[计] 折叠