At birth, the umbilical cord is cut and the umbilical vein collapses to form the round ligament.

在出生时剪掉脐带后，脐静脉闭锁形成圆韧带。

The round ligament stay shut because pressures in the portal venous system and the systemic venous system are the same under 12 mmHg.

圆韧带保持关闭状态，这是因为门静脉系统里的血压和体静脉系统的血压都同样是低于12mmHg的。

The uterus is anchored to the sacrum by utero-sacral ligaments, to the anterior body wall by round ligaments, and it's supported laterally by cardinal ligaments as well as the mesometrium, which is part of the broad ligament.

子宫被子宫-骶韧带固定在骶骨上，前方被圆韧带固定，侧方被主韧带和子宫系膜支撑；子宫系膜是阔韧带的一部分。