Obstruction can lead to prolonged labour, which increases the risk of caesarean section, heavy bleeding, distress in the infant and stillbirth.

阻塞可能使分娩时间延长，从而增加剖腹产、大出血、婴儿窘迫和死产的危险。

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One problem with the approach in the previous section is that the conceptual information is duplicated in schemata, which can lead to skew as one or the other is updated.

上一小节介绍的方法有一个问题，就是概念信息在schemata中是重复的，因此对这些重复的概念进行更新时会出现错误。

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With theory analysis, experiment research and spot test, this paper takes the lead in establishing technology system of gob-side entry retaining with large section or small one.

通过理论分析、实验研究和现场试验，本文率先在国内初步建立了由大断面、小断面沿空留巷组成的综放沿空留巷技术体系。

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Another Frenchman, Cyril Despres, extended his lead to 2:22 over fellow-KTM rider and defending champion Marc Coma in the motorcycle section, after his fourth stage victory.

CNN: Ferrari's Alonso slams F1 testing rules

The rights of parents to be provided with an education for their children which conforms with their "religious and philosophical convictions" could lead to disputes in areas such as sex education, suggested Ms Driver, "re-awakening the debate on Section 28".

BBC: Fairer funding call for schools