blood vessels of umbilical cord

例句：

1. 1.The baby's umbilicalcord was wrapped tightly around his neck.
   宝宝的脐带紧紧地绕在他的脖子上。
2. 2. The doctorremoved the umbilical cord toperform an emergency C-section.
   医生剪断了脐带以进行紧急的剖腹产手术。
3. 3. The umbilicalcord is a vital part of the humanbody that connects the fetus tothe mother.
   脐带是人体的重要组成部分，它连接着胎儿和母亲。