umbilical fissure

例句：

1. 1. The baby's umbilical fissure was healing well.
   宝宝的脐带裂口正在愈合得很好。
2. 2. He suffered a umbilical fissure during the birth process.
   他在分娩过程中遭受了脐带裂伤。
3. 3.Doctors often recommend exercises to help prevent umbilical fissures in newborns.
   医生经常推荐运动来帮助预防新生儿的脐带裂伤。