助产技术
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obstetric practice teaching 产科实习教学
Obstetric Anaesthetic Practice 产科麻醉实践
obstetric practice
产科实践
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The difference in daily birth patterns, the report says, is probably explained by obstetric practice.
BBC: Wintry nights spark summer births
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