柯林斯高阶英汉双解学习词典释义
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    发电机
    A dynamo is a device that uses the movement of a machine or vehicle to produce electricity.
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    精力充沛的人
    If you describe someone as a dynamo, you mean that they are very energetic and are always busy and active.
    例句
    Myles is a human dynamo. 迈尔斯是个精力充沛的人。