名词
中文翻译：绒毛膜的
同义词：
['chorion', 'chorionic membrane', 'chorionic vesicle']
例句：
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1. The chorionic sac is where the fetus develops inside the mother's womb.
绒毛膜囊是胎儿在母体子宫内发育的地方。
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2.During pregnancy, the chorionic sac grows and expands to support the developing fetus.
怀孕时，绒毛膜囊会生长并扩张以支持发育中的胎儿。
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3.The chorionic sac contains blood vessels that supply nutrients and oxygen to the fetus.
绒毛膜囊含有为胎儿提供养分和氧气的血管。