名词
中文翻译：贝壳核心
同义词：
['cavity core', 'shell cavity']
例句：
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1.The shell core is the part of a shell that contains the soft inner tissue.
贝壳核心是壳内柔软的软组织所在部分。
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2.The shell core was used to create the intricate patterns on the shell.
贝壳核心被用来在壳上创造出复杂的图案。
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3. The shell core is essential for the survival of many marine organisms.
贝壳核心对许多海洋生物的生存至关重要。