obstetric analgesia的用法和樣例：
例句
- It is the better concentration of ropivacaine used for labor analgesia.
是硬膜外分娩鎮痛較為理想的藥物濃度。 - As a new subjcct, there has been no teaching syllabus and schoolbook, there are many focuses of debate in labor analgesia.
摘要分娩鎮痛是一門(mén)新興學(xué)科，尚無(wú)現成的教學(xué)大綱和教科書(shū)，也有許多爭義的焦點(diǎn)。
