nosedive

n 1 sharp vertical descent by an aircraft, etc, with the nose pointing towards the earth （飞行器等的）俯冲: go into a sudden nosedive 突然俯冲. 2 (fig 比喻) sudden plunge or drop 突降; 暴跌: Prices have taken a nosedive. 价格已暴跌. v [I] 1 (of an aircraft, etc) descend vertically with the nose pointing towards the earth （指飞行器等）俯冲. 2 (fig 比喻) fall sharply 急降; 暴跌: Demand for oil has nosedived. 对汽油的需求已骤减.

northeast, northerly, northern, Northern Slope, northerner, northernmost, northward, northward(s), northwards, northwest, northwestern, Norway, Norwegian, Nos (also nos), nose, nose-cone, nose-flute, nose-wheel, nosebag (US feedbag), nosebleed, nosegay, nosering, nosey (also nosy), Nosey Parker, nosh, nosh-up, nosily, nosiness, nostalgia, nostalgic, nostalgically, nostril, nostrum, not, not a little, not as...as, not as...as..., not as/so...as, not at all, not but that,