名词
中文翻译：婴儿期
同义词：
['infant period', 'infantile period', 'neonatal period']
例句：
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1. The baby was born prematurely and has been in the hospital for several months.
这个婴儿早产，已经在医院住了几个月了。
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2.The baby broke his arm during a fall at home.
宝宝在家摔断了手臂。
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3.The baby's growth is a crucial part of their development.
宝宝的生长发育是他们发展的重要部分。