The placenta is the organ that grows inside a woman's womb during pregnancy, joined to the baby by the umbilical cord. It is how the baby is fed: the mother's blood and the baby's blood run very close together inside it, so oxygen and food pass across to the baby and waste passes back. It is temporary — it grows only for that pregnancy, and after the baby is born the mother pushes it out too, which is why English has the everyday word 'afterbirth' for the same thing.

The placenta胎盤(placenta) is是 the organ that grows inside a woman's womb during pregnancy懷孕期間長在女性子宮裡的器官 joined to the baby by the umbilical cord並透過臍帶和寶寶相連 It它 is how the baby is fed就是寶寶獲得養分的方式 the mother's blood and the baby's blood媽媽的血和寶寶的血 run very close together inside it在裡面靠得很近地流動 so oxygen and food pass across to the baby所以氧氣和養分可以傳給寶寶 and waste passes back廢物則傳回去 It is temporary它是暫時性的 it grows only for that pregnancy只為那次懷孕而生長 and after the baby is born寶寶出生後 the mother pushes it out too媽媽也會把它排出來 which is why English has the everyday word 'afterbirth'這就是為什麼英文有個日常用語'afterbirth' for the same thing指的就是同一樣東西

This is a normal, non-embarrassing word in English. Doctors use it, pregnancy books use it, and ordinary parents say it without lowering their voice.

This這 in English在英文裡 is是 a normal, non-embarrassing word個很普通、不會讓人尷尬的字 Doctors use it醫生會用這個字 pregnancy books use it孕期書籍也會用 ordinary parents say it without lowering their voice一般父母說出口也不會壓低音量

Other animals have one too, and biologists talk about a cow's or a dog's placenta the same way.

Other animals have one too其他動物也有胎盤 and biologists talk about a cow's or a dog's placenta生物學家講到牛或狗的胎盤時 the same way用法也是一樣的

The plural is 'placentas' in ordinary use, though medical writing sometimes keeps the Latin 'placentae'. Note that English says 'the placenta', with 'the', when talking about a particular pregnancy: 'the placenta was healthy'.

in ordinary use一般用法裡 The plural is 'placentas'複數是'placentas' though medical writing sometimes keeps the Latin 'placentae'不過醫學寫作有時候會保留拉丁文'placentae' Note that要注意 when talking about a particular pregnancy講到特定一次懷孕時 English says 'the placenta'英文會說'the placenta' with 'the'加上'the' 'the placenta was healthy'（胎盤很健康）