名词
中文翻译：Unknown
同义词：
['umbilical', "umbilical cord例句：1. The baby's umbilical cord was wrapped tightly around his neck.（婴儿的脐带紧紧地绕在他的脖子上。）2. The doctor removed the umbilical cord to perform an emergency cesarean section.（医生剪断了脐带来进行紧急剖腹产手术。）"]
例句：
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1. The baby's umbilical cord was wrapped tightly around his neck.
婴儿的脐带紧紧地绕在他的脖子上。
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2. The doctor removed the umbilical cord to perform an emergency cesarean section.
医生剪断了脐带来进行紧急剖腹产手术。
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3.Umbilical cord blood is used for stem cell research.
脐带血被用于干细胞研究。