slump: n.1.〔方言〕陷入，掉下；〔方言〕沼地。2.【商业】(物价等的)暴跌；(事业的)衰败，低落；(精神等的)消沉，萎靡。vi.1.〔方言〕掉下，陷入(泥、雪等中)；崩坍。2.失败，挫折。3.【商业】暴跌；衰败；销沉。4.【矿物】塌陷，崩塌。短语和例子slump into a chair 倒在椅子里。 hit a slump 〔美国〕(选手成积)猛落。
America ' s three biggest carmakers saw a slump in sales in the united states during july as demand fell for petrol - thirsty suvs and rose for fuel - efficient cars 七月，由于对耗油的运动型多功能车（ suv ）的需求下降以及对省油型汽车需求的上升，美国三大汽车制造商在美国境内销售额大幅下跌。
