语音讲解：
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　　定义：

　　insane.irrational.Be out of one's head

　　疯狂的；非理智的；愚昧的

　　例句：

　　She was out of her head to go swimming in this freezing weather.

　　她疯疯癫癫，这么冰冷的天气跑去游泳。