Premature birth is the main cause of perinatal mortality.

早产是围产期死亡的主要原因。

《柯林斯英汉双解大词典》

The instance of premature birth and low-birth weight in infants was also lower in the massage group compared with the controls.

与一般孕妇相比，接受这类按摩的孕妇中出现婴儿早产和低出生体重的几率也更小。

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Some studies, including the new report, suggest DHA supplementation in pregnancy reduces the likelihood of premature birth.

一些研究，包括最新报告，暗示孕期补充DHA会减少早产的可能。

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It is already well established that smoking leads to reduced birth weight and an increased risk of premature birth.

BBC: Smoking ban 'cuts premature births'

If all these were implemented, the researchers suggest premature birth could be prevented for 58, 000 babies.

BBC: 'Too little known' on early birth

She may even have been scared in case all the commotion would bring on a premature birth.

BBC: Seeing chaos at Christmas