形容词
中文翻译：幼稚的
同义词：
['infantile', 'pediatric']
例句：
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1.The baby is very infantile and needs constant supervision.
这个婴儿非常幼稚，需要不断的监护。
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2.The child's infantile behavior has been causing a lot of trouble for the parents.
孩子的幼稚行为给父母带来了很多麻烦。
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3. The infant was so infantile that it couldn't even walk by itself.
这个婴儿非常幼稚，连走路都不行。