名词
中文翻译：外胚层
同义词：
['outer epidermis', 'outermost layer']
例句：
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1. The plant's outer epidermis is where the roots grow.
植物的外胚层是根生长的地方。
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2. The outer epidermis of the leaf is where the chloroplasts are located.
叶子的外胚层是叶绿体所在的位置。
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3. The outer epidermis of the fruit is where the seeds are stored.
果实的外胚层是种子储存的地方。