cervical plug

例句：

1. 1.The doctor inserted a cervical plug to prevent infection.
   医生插入了一个宫颈塞以防止感染。
2. 2. She was given a cervical plug for her surgery.
   她因为手术被植入了一个宫颈塞。
3. 3.The cervical plug was removed after the procedure.
   在手术之后，取出了宫颈塞。