The last stage of the birth process involves the delivery of the placenta, which is now called the afterbirth.

分娩的最后一个阶段是胎盘的出来。

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I do not want a routine injection of pitocin after the delivery to aid in expelling the placenta.

我不统一用常规的注射催产素来排出胎盘，我一生完孩子就要尽快开始母乳喂养孩子。

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Premature rupture of membrane, fetal distress, severe pregnancy induced hypertension, placenta praevia were the main risk factors of premature delivery.

结果胎膜早破，胎儿宫内窘迫，重度妊高征，前置胎盘是引起早产的主要因素。

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