名词
中文翻译：疯子
同义词：
['mad', 'deranged', 'insane', 'maniacal']
例句：
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1.He was a lunatic when he was young, but now he's a respected psychologist.
他年轻时是个疯子，但现在是一位受人尊敬的心理学家。
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2. She was accused of being a lunatic for her outrageous behavior.
她因她的异常行为而被指控为疯子。
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3. The doctor said that the patient was suffering from a severe case of lunacy.
医生说病人患有严重的精神病。