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1. Oxford American Dictionary

   spiral

   • IPA[ˈspīrəl]

   美式

   • adj.
     winding in a continuous and gradually widening (or tightening) curve, either around a central point on a flat plane or about an axis so as to form a cone；winding in a continuous curve of constant diameter about a central axis, as though along a cylinder; helical.
   • n.
     a spiral curve, shape, or pattern；a spiral spring.
   • v.
     move in a spiral course；cause to have a spiral shape or follow a spiral course

   • verb: spiral, 3rd person present: spirals, gerund or present participle: spiralling, past tense: spiralled, past participle: spiralled

   • noun: spiral, plural noun: spirals

2. • 釋義

   adj.

   形容詞

   • 1. winding in a continuous and gradually widening (or tightening) curve, either around a central point on a flat plane or about an axis so as to form a cone a spiral pattern
   • ▪ winding in a continuous curve of constant diameter about a central axis, as though along a cylinder; helical.
   • ▪ (of a stairway) constantly turning in one direction as it rises, around a solid or open center a wrought-iron spiral staircase
   • ▪ (of a fracture) curving around a long bone lengthwise.
   • ▪ short for spiral-bound

   n.

   名詞

   • 1. a spiral curve, shape, or pattern he spotted a spiral of smoke
   • ▪ a spiral spring.
   • ▪ short for spiral galaxy
   • 2. a progressive rise or fall of prices, wages, etc., each responding to an upward or downward stimulus provided by a previous one an inflationary spiral
   • ▪ a process of deterioration through the continuous increase or decrease of a specified feature a downward spiral of sex and drink
   • 3. a pass or kick that moves smoothly through the air while spinning on its long axis.

   v.

   動詞

   • 1. move in a spiral course a wisp of smoke spiraled up from the trees 同義詞 coil, wind, twirl, swirl, twist, ... 更多wreathe, snake, gyrate
   • ▪ cause to have a spiral shape or follow a spiral course spiral the bandage around the injured limb 同義詞 coil, wind, twirl, swirl, twist, ... 更多wreathe, snake, gyrate
   • 2. show a continuous and dramatic increase inflation continued to spiral 同義詞 soar, shoot up, rocket, increase rapidly, rise rapidly, ... 更多leap up, escalate, climb, mount, informalskyrocket, go through the ceiling, go through the roof反義詞 fall
   • ▪ decrease or deteriorate continuously he expects the figures to spiral down further 同義詞 deteriorate, decline, degenerate, worsen, get worse, ... 更多informalgo downhill, take a nosedive, go to pot, go to the dogs, hit the skids, go down the toilet, go down the tubes反義詞 improve