| 词汇 | spiral |
| 释义 | spiral noun[ C ] uk /ˈspaɪə.rəl/ us /ˈspaɪr.əl/ a shape made up of curves, each one above or wider than the one before: 螺旋形 spiral-shapedA corkscrew is spiral-shaped.瓶塞钻是螺旋形的。 Mike_Kiev/iStock/Getty Images Plus/GettyImages downward spiral 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 This year's downward spiral of house prices has depressed the market.今年房价的持续下跌造成了市场的疲软。 in American football, a kick or throw of the ball that spins on its long axis(= imaginary straight line going through the centre of an object that is spinning) as it is thrown in the air: The quarterback threw a perfect spiral into the hands of the wide receiver. The country's economy is on a downward spiral.该国的经济正日渐衰退。 The pasta was in small spiral shapes. The staircase was a grand spiral of marble. Geometry: bends, loops & curves anfractuous arc bend coil conic curve dogleg elbow fishhook geniculate helically meander sigmoidally spline sweepy swoosh tightness trajectory twist whirl You can also find related words, phrases, and synonyms in the topics: Revolving, rotating and spinning American football spiral verb[ Iusually+ adv/prep ] uk /ˈspaɪə.rəl/ us /ˈspaɪr.əl/-ll- or US usually-l- to move in a spiral: 呈螺旋式上升（或下降）；盘旋上升（或下降） With one wing damaged, the model airplane spiralled downwards.模型飞机的一个机翼坏了，盘旋着下坠。 If costs, prices, etc. spiral, they increase faster and faster: （费用、价格等）急剧增长，急速上升 Spiralling costs have squeezed profits.急剧上升的成本压缩了利润空间。 spiral downwardsmainly UK(US usuallyspiral downward) (of prices, etc.) to become less, at a faster and faster rate: （价格等）急剧下降 Employees were demanding higher wages at a time when productivity was spiralling downwards. 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 spiral out of controlViolence in the country is threatening to spiral out of control.国内暴力活动正要进入急剧恶化的状态。 spiral intoHe spiralled into a drug addiction that cost him his life.他的毒瘾急剧恶化，直到付出生命的代价。 Moving downwards base jumping descend descent downwardly drop/fall/sink like a stoneidiom fall fall down go down nosedive pancake landing parachute plumb plunge post-dive pronate pronation put something/someone down rain stone touch You can also find related words, phrases, and synonyms in the topics: Price increases spiral adjective[ before noun ] uk /ˈspaɪə.rəl/ us /ˈspaɪr.əl/ shaped in a series of curves, each one above or wider than the one before: 螺旋形的 a spiral staircase螺旋式楼梯 a spiral galaxy漩涡星系 Geometry: properties of circles & curves amplitude arched bore circularity circumferential concavity concentric concentrically conic curvy domed eccentric girth globular incisura lenticular lentiform osculate parabolic rounded spiral | American Dictionaryspiral noun[ C ] us/ˈspɑɪ·rəl/ a shape of a continuous, curving line that forms circles around a center point: A corkscrew is made in a spiral. fig. Roy was bitter about the downward spiral of his life (= it was becoming continuously worse). spiraladjective[ not gradable ]us/ˈspɑɪ·rəl/ New playground equipment includes a large spiral slide. spiral verb[ I ] us/ˈspɑɪ·rəl/-l- | -ll- to move in a spiral: The engine quit, and my beautiful model airplane spiraled downward. High winds spiraled around the storm center. spiral | Business Englishspiral noun[ C ] uk /ˈspaɪərəl/us a situation in which prices, levels, rates, etc. go down, or in which a situation gets worse and is difficult to control because one bad event causes another: a spiral of sthThe world's two biggest economies are caught in a spiral of borrowing. This year's downward spiral of house prices has depressed the market. My former colleagues have been stuck in a spiral that continues to say, the only way we can continue our profit margins is to cut good journalism, and that is to me a death spiral. spiral verb[ I,usually+ adv/prep ] uk /ˈspaɪərəl/usUK-ll- | US-l- (alsospiral up/upward(s)) if costs, prices, etc. spiral, they increase quickly: Costs spiral, and the patient is subjected to tests they don't need. Inflation began to spiral upward. spiral (from sth) to sthThe country's foreign debt spiralled from $840 million to $2.6 billion. spiral downwards if costs, prices, etc. spiral downwards, they go down quickly: Stock prices have spiralled downwards for the past two weeks. spiral out of control if a situation spirals out of control, it becomes impossible to control because one bad event causes another: The project spiraled out of control, running $300 million over budget. There is a great deal of evidence that internet gambling is spiralling rapidly out of control. spiralling(USspiraling) spiralling fuel costs Examples of spiralspiral So, you have a spiral until people realize that those returns are really not maintainable. Forward flow lines above the vortex were directed upward to attach on the superior vessel wall and then spiraled down over the vortex. These differences contributed to the formation of a great ideological divide that admitted no compromise, and that soon generated a spiral of political violence. Stationary and drifting spiral waves of excitation in isolated cardiac muscle. They believe that the set of cubic spirals has several advantages when used in smoothpath planning, one of which is curvature continuity. This rest increases the physiological changes occurring in the body and the fatigue experienced in a selfperpetuating spiral of increasing fatigue. The spiral stair-tower is enfolded by these forms, like an infant in the protective embrace of its parents. By 1988 the monetary indicators were spiralling out of control. The interests of management, faced with spiraling cost of labour, and unions, operating in a labour surplus economy, converged towards a masculinisation of organized labour. In its shell guise, the spiral usually has small protuberances around the perimeter. Failed physiological change of the spiral arteries will result in persistence of the muscular layer. In preeclampsia, an inadequate placental trophoblast invasion of the maternal uterine spiral arteries results in poor placental perfusion, leading to placental ischaemia. Reduced invasion will leave the spiral arteries vasoreactive, and thus more likely to undergo spontaneous transient vasoconstriction. However, spiralling wage demands, growing unrest and strikes continued. A violent strategy would have led inevitably to spiralling escalation, with the state having the strategic edge at every turn in the foreseeable future. See all examples of spiral These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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