| 单词 | cryptodire |
| 释义 | cryptodire/ˈkrɪptə(ʊ)dʌɪə/Zoology and Palaeontology adjective = cryptodiran. noun A chelonian of the suborder Cryptodira (which includes most kinds of tortoise, terrapin, and turtle), characterized by retraction of the head directly backwards into the shell by a vertical flexure of the neck. Origin |
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