[countable, usually singular] a period of great economic difficulty; a sudden decrease in value经济困难时期；（价值的）突然下降◆a stock-market blowout股市骤跌  ➡  meltdown (Stock Exchange 证券交易(所)) a situation when new shares that are being offered are all sold very quickly and the price is high新股畅销（新发行的股票以高价销售一空）a sudden large increase突然大量增加◆The government has blamed poor economic conditions for the deficit blowout.政府将恶劣的经济形势归咎于骤然剧增的赤字。