宫颈松弛临床表现如下：The clinical manifestations of cervical relaxation are as follows:

　　反复的孕中期或孕晚期的早期宫颈的无痛性扩张，伴有妊娠囊的膨入阴道，随后导致胎膜早破与不成熟胎儿的娩出。

　　The painless expansion of the cervix in the middle or late stages of pregnancy, with the expansion of the pregnancy sac into the vagina, resulting in premature rupture of the fetal membrane and the delivery of an immature fetus.