名词
中文翻译：胚胎外膜
同义词：
['extraembryonic layer', 'extraembryonic tissue']
例句：
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1. The extraembryonic membraneis the outer layer of the embryo thatseparates it from the surrounding amniotic fluid.
胚胎外膜是胚胎与周围羊水分离的外层。
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2. Duringthe development of the fetus, theextraembryonic membranes gradually shrinkand eventually disappear.
胎儿发育过程中，胚胎外膜逐渐萎缩并最终消失。
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3. Theextraembryonic membranes are responsiblefor providing nutrients to the developing fetus.
胚胎外膜负责为发育中的胎儿提供营养。