名词
中文翻译:Unknown
同义词:
['nacreousnucleus', 'pearl core']
例句:
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1. The pearl nucleusof the pearl is the most valuable part.
珍珠的核心是珍珠中最有价值的部分。
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2. Thepearl nucleus is made up ofa protein called nacrein.
珍珠核由一种叫做nacrein的蛋白质组成。
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3. The pearl nucleus is surroundedby a layer of nacrein.
珍珠核周围有一层nacrein。