slump

下降，衰落；倒下；大幅度下降，暴跌英释中释vto fall or lean against something because you are not strong enough to stand

衰退；暴跌；消沉英释中释nSlump is also a noun

1 economic slump,经济衰退

2 slump test,稠度试验，坍落试验；流动度试验；重陷试验

1 Sales slumped by 20% last year..去年销售额骤减 20%。

2 The council's land is now worth much less than originally hoped because of a slump in property prices..由于地产价格的暴跌，委员会的土地目前大不如原来所希望的那么值钱了。