pelvic surface of sacrum

例句：

1. 1. The doctor examinedthe patient's pelvic surfaceof sacrum and found no signsof injury.
   医生检查了患者的骶骨骨盆面，没有发现任何受伤的迹象。
2. 2.During childbirth, the pelvicsurface of sacrum is the mostvulnerable part of the body.
   在分娩过程中，骶骨骨盆面是身体最脆弱的部分。
3. 3. The patient was advised to avoidlifting heavy objects on the pelvicsurface of sacrum.
   患者被建议避免在骶骨骨盆面上抬重物。