名词
中文翻译：绒毛膜
同义词：
['chorion', 'chorionic epithelium']
例句：
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1.The fetus is surrounded by the chorion, which provides nutrients and oxygen to the developing baby.
胎儿被绒毛膜包围，为发育中的婴儿提供营养和氧气。
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2.During pregnancy, the chorion is responsible for protecting the fetus from harmful substances in the mother's blood.
怀孕期间，绒毛膜负责保护胎儿免受母体血液有害物质的伤害。
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3. Researchers are studying the role of the chorion in early development, as it plays a crucial part in nurturing the fetus.
研究人员正在研究绒毛膜在早期发育中的作用，因为它对胎儿的养育起着至关重要的作用。