They molt carapaces, I molt old body.

他们换壳，我换身体。

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This part also arranges and classifies the unearthed prehistoric carapaces from the biological point of view.

该部分还从生物学的角度对史前出土的龟甲进行了整理。

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Though the tortoises are enormous, and the differences between the species noticeable, the concept of natural selection is not written out in neat script on their carapaces for the reading.

尽管这里的乌龟非常多，并且跟其它的物种有著明显的区别，自然选择的概念也没有字迹工整的刻写在它们的龟壳上供人阅读。

youdao

Though the tortoises are enormous, and the differences between the species noticeable, the concept of natural selection is not written out in neat script on their carapaces for the reading.

尽管这里的乌龟非常多，并且跟其它的物种有著明显的区别，自然选择的概念也没有字迹工整的刻写在它们的龟壳上供人阅读。

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