名词
中文翻译：外胚层
同义词：
['outer layer', 'outermost layer例句：1. The embryonicdevelopment of the human brain is divided intothree main layers: the ectoderm (outer layer)', 'the mesoderm (middle layer)', 'and the endoderm (inner layer).（人类大脑的胚胎发育分为三层：外胚层、中胚层和内胚层。）2. In the study of plantanatomy', 'the exocoele is a region where cells are arrangedin a specific pattern to form tissues.（在植物解剖学研究中，外胚层是细胞按特定模式排列以形成组织的区域。）3. The exocoele isalso important for understanding the development of thenervous system during embryonic stages.（外胚层对于理解胚胎阶段神经系统的发展也非常重要。）']
例句：
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1. The embryonicdevelopment of the human brain is divided intothree main layers: the ectoderm (outer layer), the mesoderm (middle layer),and the endoderm (inner layer).
人类大脑的胚胎发育分为三层：外胚层、中胚层和内胚层。
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2. In the study of plantanatomy, the exocoele is a region where cells are arrangedin a specific pattern to form tissues.
在植物解剖学研究中，外胚层是细胞按特定模式排列以形成组织的区域。
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3. The exocoele isalso important for understanding the development of thenervous system during embryonic stages.
外胚层对于理解胚胎阶段神经系统的发展也非常重要。