名词
中文翻译：脐带
同义词：
['navel', 'umbilical cord', 'belly button']
例句：
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1. The baby's navel is still visible through his clothes.
婴儿的肚脐还从衣服里露出来。
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2. The doctor removed the umbilical cord during the birth.
医生在出生时剪断了脐带。
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3. The old woman had a belly button that she kept as a keepsake.
这位老妇人留着一个肚脐作为纪念品。