Analysis of narrative strategy, character creation and race problem of the United States resulting from the theme of the film can understand this film from different angles.

对影片的叙事策略、人物塑造，以及由其主题所迁延出的美国种族问题进行分析，可以从几个不同的角度来认识这部作品。

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Last, the writer focally approaches the subject of Classroom Process strategy in inquiry teaching from three angles: preparatory strategy, implementing strategy, evaluating strategy.

最后，笔者从准备策略、实施策略和对学生探究学习的评价策略三个方面，重点探讨了探究教学的课堂教学策略。

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For obtaining practical output voltage waveform, the optimized strategy of widening a couple of switch angles is presented based on the specific requirement of on-off time of switching device.

为了得到实际输出电压波形，根据开关器件通断时间的具体要求，提出了展宽开关角对的优化策略。

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