a sudden failure of sth, such as an institution, a business or a course of action （机构、企业、行动等的）崩溃，突然失败，倒闭◆the collapse of two important companies 两家重要公司的倒闭◆This breakdown in trust led to the collapse of the deal. 信任崩溃导致交易失败。◆a wave of corporate collapses 企业倒闭浪潮
a sudden fall in value 突然贬值；突然降价；暴跌◆the collapse in technology prices 技术价格的暴跌◆the collapse of the Nasdaq index 纳斯达克指数狂跌◆share price collapses 股票价格暴跌