与"primitive backbond"相近的词条

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• primitive amphibia
• primitive aorta
• primitive apparatus
• primitive atrioventricular foramen
• primitive atrium
• primitive backbond
• primitive bacteria
• primitive BFU-erythroid progenitor
• primitive bird
• primitive body cavity
• primitive body segment
• primitive bone
• primitive brain vesicle
• primitive carcinoma
• primitive cardiac tube
• primitive cell

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