Premature birth is the main cause of perinatalmortality.
早产是围产期死亡的主要原因。
《柯林斯英汉双解大词典》
2
Reductions in perinatalmortality will require strategies such as early detection and management of health problems during pregnancy.
降低围产期死亡率将需要采取在怀孕期间提早检查和管理健康问题等方法。
3
Maternal education or gestational age at initiation of supplementation may have contributed to the observed heterogeneous effects on perinatalmortality.