a shape made up of curves, each one above or wider than the one before螺旋形
C2 a situation in which a price, etc. becomes lower, or a situation gets worse and is difficult to control because one bad event causes another(价格等的)不断下降;(局面的)迅速恶化;螺旋式恶性下滑
More examples
The country's economy is on a downward spiral.
The pasta was in small spiral shapes.
The staircase was a grand spiral of marble.
to move in a spiral呈螺旋式上升(或下降);盘旋上升(或下降)
If costs, prices, etc. spiral, they increase faster and faster.(费用、价格等)急剧增长,急速上升
If a situation spirals, it quickly gets worse in a way that becomes more and more difficult to control.(形势)急剧恶化
shaped in a series of curves, each one above or wider than the one before螺旋形的
noun
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