形容词
中文翻译：幼稚的
同义词：
['childish', 'juvenile', 'naiad']
例句：
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1.The child's infantile behavior is a source of concern for his parents.
孩子的幼稚行为让父母感到担忧。
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2. She was so young that she couldn't understand the complexities of the situation.
她太年轻了，无法理解这种复杂的情况。
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3.The baby's infantile cries are a common occurrence during the first few months of life.
婴儿在出生后的前几个月里经常发出啼哭。