名词
中文翻译：内胚层
同义词：
['innermost layer', 'innermost epithelium']
例句：
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1.The endoderm is the first layer of cells in the embryonic vertebrate body.
内胚层是胚胎脊椎动物体的第一层细胞。
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2.The endoderm is responsible for producing the digestive system.
内胚层负责产生消化系统。
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3.The endoderm is also involved in the development of the nervous system.
内胚层还参与神经系统的发展。