mindmap root((转动)) curve implies following or producing a line suggesting the arc of a circle or ellipse: the road ~d sharply to the left. bend suggests a yielding to force and implies a distortion from the anticipated, normal, or desired straightness: metal rods ~ under the immense weight. turn implies change of direction essentially by rotation and not usually as a result of force or pressure: the comet will ~ toward the earth. twist implies the influence of a force having a spiral effect throughout the object or course involved: the ~ed wreckage of a spacecraft.