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青年农民歌手申长源 谢桂兰离乡谋生，陷入军阀虎口，桂兰拒辱触柱，长源逃出寻找贫苦人出路，终于遇到刘志丹领导的陕北红军。。Filmed in Canada, Iran, and the United States, Secrets of the Surface: The Mathematical Vision of Maryam Mirzakhani examines the life and mathematical work of Maryam Mirzakhani, an Iranian immigrant to the United States who became a superstar in her field. In 2014, she was both the first woman and the first Iranian to be honored by mathematics' highest prize, the Fields Medal. ...。