the mainspring of a reform movement改革运动的主要推动力Her jealousy is the mainspring of the novel's plot.这部小说情节中贯穿了她的忌妒之心.My life has been music, and a constant search for it has been the mainspring of my life...我以音乐为生，对音乐的不...
You begin to understand what actions were the mainspring of the story.你开始体会到是什么样的行动在推动这个故事的发展。My life has been music, and a constant search for it has been the mainspring of my life.我以音乐为生，对音乐的不懈探索已经成为我生活的动力。Her jealousy...