名词
中文翻译：重复
同义词：
['repetition', 'recurrence', 'repetitiveness']
例句：
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1.The teacher repeated the lesson several times to ensure understanding.
老师多次重复讲解课程以确保理解。
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2.The song has a repetitive melody that is difficult to forget.
这首歌有一个重复的旋律，很难忘记。
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3.In his speech, he emphasized the importance of repetition in learning.
在他的演讲中，他强调了重复在学习中的重要性。