premature birth [premature births](childbirth occurring earlier than 37 completed weeks of gestation) noun [UK: ˈpre.mə.tjʊə(r) bɜːθ] [US: ˌpri.mə.ˈtʃʊr ˈbɝːθ]
早產兒 noun
premature birth [premature births](birth of an infant prior to the completion of its prenatal development) noun [UK: ˈpre.mə.tjʊə(r) bɜːθ] [US: ˌpri.mə.ˈtʃʊr ˈbɝːθ]