名词
中文翻译：外胚层中胚层
同义词：
['extraembryonic layer', 'extraembryonic tissue']
例句：
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1.The extraembryonic mesoderm is the first to develop in theembryonic stage.
外胚层中胚层是胚胎发育初期最先形成的。
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2. The extraembryonic mesoderm playsa crucial role in the development of thefetus.
外胚层中胚层在胎儿发育中起着至关重要的作用。
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3. During theearly stages of development, the extraembryonic mesoderm differentiatesinto various tissues and organs.
在发育的早期阶段，外胚层中胚层分化成各种组织和器官。