名词
中文翻译：Unknown
同义词：
['ectoderm例句：1. The ectodermal layer of the skin is responsible for protecting it from external factors.（皮肤的外胚层负责保护皮肤免受外界因素侵害。）2. Ectopedia is a rare disease that affects the development of the nervous system.（神经发育障碍是一种罕见的疾病，影响神经系统的发展。）']
例句：
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1. The ectodermal layer of the skin is responsible for protecting it from external factors.
皮肤的外胚层负责保护皮肤免受外界因素侵害。
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2. Ectopedia is a rare disease that affects the development of the nervous system.
神经发育障碍是一种罕见的疾病，影响神经系统的发展。
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3. In embryology, the ectodermis is the outermost layer of cells in an organism's body.
在胚胎学中，外胚层是生物体最外层的细胞层。