海龟是带壳的爬行动物。

Turtles are reptiles with shells.

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因为硅藻有着能够保护他们遭到饶足类动物食用的壳，因此他们能够带更多的碳到海底。

As diatoms have shells made of silica they are protected from copepods and so are more likely to die without being eaten and thus take take their carbon to the ocean floor.

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甲壳素纤维：甲壳素又称甲壳质、几丁质、壳蛋白，是从甲壳动物外壳及真菌、藻类等低等植物的细胞壁中提取的一种带正电荷的动物纤维素。

Chitin fiber: chitin, also known as chitin, chitin, shell protein from crustacean shells and fungi, algae and other lower plants of the cell wall extract of a positively charged cellulose animals.

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甲壳素纤维：甲壳素又称甲壳质、几丁质、壳蛋白，是从甲壳动物外壳及真菌、藻类等低等植物的细胞壁中提取的一种带正电荷的动物纤维素。

Chitin fiber: chitin, also known as chitin, chitin, shell protein from crustacean shells and fungi, algae and other lower plants of the cell wall extract of a positively charged cellulose animals.

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