slumpvi.
英 slʌmp | 美 slʌmp
中文vi. 下降，衰落；倒下；大幅度下降，暴跌\nvt. 使降低；使衰落；使倒下\nn. 衰退；暴跌；消沉
下降，衰落；倒下；大幅度下降，暴跌
vt. 使降低；使衰落；使倒下
n. 衰退；暴跌；消沉
词根词源
slump (v.)1670s, "fall or sink into a muddy place," probably from a Scandinavian source such as Norwegian and Danish slumpe "fall upon," Swedish slumpa; perhaps ultimately of imitative origin. Related: Slumped; slumping.
The word "slump," or "slumped," has too coarse a sound to be used by a lady. [Eliza Leslie, "Miss Leslie\\'s Behaviour Book," Philadelphia, 1839]
Economic sense from 1888.slump (n.)"act of slumping, slumping movement," 1850; "heavy decline in prices on the stock exchange," 1888, from slump (v.). Generalized by 1922 to "sharp decline in trade or business."
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