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n.旋转，转动；轮流，循环；[农]轮作；[天]自转 变形： 复数：rotations 英英释义： rotation[ rəu'teiʃən ]n.the act of rotating as if on an axis"the rotation of the dancer kept time with the music"同义词：rotary motion(mathematics) a transformation in which the coordinate axes are rotated by a
