形容词
中文翻译：婴儿的
同义词：
['infantile', 'pediatric', 'juvenile']
例句：
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1.The infantile behavior of the child was quite unusual.
孩子的这种幼稚行为非常不寻常。
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2.The pediatrician recommended a balanced diet for the baby.
儿科医生建议给婴儿提供均衡的饮食。
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3. The juvenile delinquency rate has been on the rise in recent years.
近年来，青少年犯罪率一直在上升。