名词
中文翻译：Unknown
同义词：
['chorion', 'chorionic sac', 'chorionic membrane例句：1. The chorionic shell is the outer layer of the fetal membranes that covers the developing baby.（绒毛膜壳是覆盖发育中婴儿的外层胎膜。）2. During pregnancy', 'the chorionic shell helps to protect the developing baby from external threats.（在怀孕期间，绒毛膜壳有助于保护发育中的婴儿免受外部威胁。）3. The chorionic shell also plays a crucial role in the development of the fetus', 'as it provides nutrients and oxygen to the growing baby.（绒毛膜壳在胎儿发育中起着至关重要的作用，因为它为成长中的婴儿提供营养和氧气。）']
例句：
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1. The chorionic shell is the outer layer of the fetal membranes that covers the developing baby.
绒毛膜壳是覆盖发育中婴儿的外层胎膜。
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2. During pregnancy, the chorionic shell helps to protect the developing baby from external threats.
在怀孕期间，绒毛膜壳有助于保护发育中的婴儿免受外部威胁。
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3. The chorionic shell also plays a crucial role in the development of the fetus, as it provides nutrients and oxygen to the growing baby.
绒毛膜壳在胎儿发育中起着至关重要的作用，因为它为成长中的婴儿提供营养和氧气。