bleeding of the umbilicus

例句：

1. 1.The baby's umbilical cord was swollen and leaking blood.
   宝宝的脐带肿胀并渗出血。
2. 2.After birth, the umbilical cord is usually cut to prevent infection.
   出生后，通常会切断脐带以防止感染。
3. 3.Doctors monitor the baby's umbilical cord for signs of infection or bleeding.
   医生监测婴儿的脐带，以检查是否有感染或出血的迹象。