Each of the couples, after the convolutions and evolutions, successively whirls round in a circle, till all are in motion.在回旋和动作变换都做完后，围成圆形的每对舞伴相继旋转直到所有舞伴都旋转起来。I found it hard to follow the convolutions of the book's plot.我发现很难领会这本书离奇曲折的情节。The movie's plot twists and convolutions demand a lot of concentration from the audience.这部电影情节复杂，迂回曲折，观众需要全神贯注。