The risk of premature delivery in multiple pregnancies is high, and babies may be born too early to survive.
多胎妊娠早产风险高，胎儿可能出生过早而夭折。
The record for multiple pregnancies was set in 1996, when a 23-year-old Greek Cypriot woman was pregnant with 11 babies.
多胞胎的记录是在1996年，一个希腊塞浦路斯的23岁女孩怀上了11胞胎。
Health watchdog NICE has drawn up recommendations for antenatal care in multiple pregnancies, amid evidence standards vary in England and Wales.
健康卫士英国国家临床优化研究所为多胎妊娠的产前护理草拟建议，其中的衡量标准在英格兰和威尔士方面有所变化。
He said most current treatments involved directly stimulating the ovaries, which carried a risk both of multiple pregnancies and side effects.
他说，目前最新的疗法需直接刺激卵巢，风险既包括多胎妊娠又包括一些副作用。
But other research has implicated increasing maternal and paternal age, low birth weight, multiple pregnancies and any medications or infections to which an expectant mom is exposed during pregnancy.
但其它的研究表明，父母生育年纪较大，出生体重较低，多胎妊娠以及准妈妈在怀孕期间的任何药物治疗或者感染等，这些都与自闭症的形成有关。
"In cases of multiple pregnancies in HIV-infected women, management must take into account the risk of preterm premature rupture of the membranes and preterm delivery," the investigators conclude.
研究者强调：“在HIV -感染妇女多胎妊娠的管理过程中，必须考虑到胎膜早熟破裂和早产的风险。”
The third was a register of all pregnancies of twins, triplets or other multiple births.
第三组对所有双胞胎，三胞胎等多胞胎的妊娠情况进行了登记。
The third was a register of all pregnancies of twins, triplets or other multiple births.
第三组对所有双胞胎，三胞胎等多胞胎的妊娠情况进行了登记。
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