名词
中文翻译：胎膜
同义词：
['placenta', 'amniotic sac', 'chorion']
例句：
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1. The fetal membrane is a thinlayer that protects the developing baby insidethe womb.
胎膜是一层薄薄的保护层，保护着子宫内正在发育的婴儿。
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2. During labor, the placenta provides oxygen and nutrients to the babywhile the mother's body produces hormones to prepare for childbirth.
在分娩过程中，胎盘为婴儿提供氧气和营养，同时母亲的身体产生激素以准备分娩。
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3. Amniotic sacs are inflated sacs of fluid that surroundthe fetus during pregnancy.
羊水囊是一种充满液体的囊状物，在怀孕期间环绕着胎儿。