名词 spiral:

1. a plane curve traced by a point circling about the center but at increasing distances from the center

2. a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle

3. a continuously accelerating change in the economy

4. ornament consisting of a curve on a plane that winds around a center with an increasing distance from the center

5. a structure consisting of something wound in a continuous series of loops

6. flying downward in a helical path with a large radius

Spirale螺旋状的spiraln.螺旋；螺旋形之物；不断恶化、增加或减少v.螺旋移动；盘旋上升；不断恶化、增加或减少adj.螺旋形的；盘旋的spiral borer螺旋钻spiral socks螺旋形花纹短袜spiral chuck三爪卡盘spiral sweep螺旋形扫描spiral plate骨螺旋板spiral wound螺旋状伤spiral shell白螺蛳壳, 螺蛳Spiral- CT螺旋CTspiral chute螺旋斜槽spiral blade螺旋阻板

1. A snail's shell is spiral in form.
   蜗牛壳是螺旋形的。
2. Prices are still spiralling.
   价格仍然在急剧上涨。