[countable] a sudden fall in sales, prices, etc.暴跌◆a sharp slump in share prices股价暴跌◆The sales slump continues to hit retail stores.零售店持续遭受销售量锐减的打搫。 SYN decline ⨁a slump in demand / prices / profits / sales / spending需求／价格／利润／销售额／开支锐减 ⨁ a bad / deep / dramatic / prolonged / sharp slump严重的／重大的／极度的／长期的／急剧的下跌 (Economics 经济学) a period when a country's economy or a business is doing very badly（经济）萧条期◆The US slump appears to be over.美国的经济萧条期似已结束。◆Tourism is in a slump.旅游业正处于萧条期。 OPP boom  ➡  picture at business cycle ⨁an economic / industry / a stock market slump经济／工业／股市萧条期 ⨁ a bad / deep / global / prolonged slump严重的／重大的／全球性的／长期的经济疲软