名词
中文翻译：外皮
同义词：
['exosarcium', 'exoskeleton例句：1. The exoskeleton of the crab is made up of chitinous plates.（螃蟹的外骨骼由几丁质板组成。）']
例句：
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1. The exoskeleton of the crab is made up of chitinous plates.
螃蟹的外骨骼由几丁质板组成。
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2.The exoskeleton of the butterfly is made up of chitinous plates.
蝴蝶的外骨骼由几丁质板组成。
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3.The exoskeleton of the spider is made up of chitinous plates.
蜘蛛的外骨骼由几丁质板组成。