| 单词 | 背甲 |
| 释义 | 〔zoea〕A larval form of crabs and other decapod crustaceans, characterized by one or more spines on the carapace and rudimentary limbs on the abdomen and thorax. 蟹幼体：蟹和其它十足目甲壳纲动物的幼虫形式，其特点是在其背甲上有一个或多个脊椎，而且在腹部和胸部有一个或多个未发展完全的肢体〔brachiopod〕Any of various marine invertebrates of the phylum Brachiopoda, having bivalve dorsal and ventral shells enclosing a pair of tentacled, armlike structures that are used to sweep minute food particles into the mouth. Also called lampshell 腕足动物：一种腕足动物属的海生无脊椎动物，具有双瓣的背甲和腹甲，其中包住一对手臂状的触手结构，用于将食物微料扫入口中 也作 lampshell〔carapace〕A protective, shell-like covering likened to that of a turtle or crustacean:外壳，外表：类似海龟或甲壳纲动物的背甲或头胸甲的防护性壳状覆盖物：〔shrimp〕Any of various small, chiefly marine decapod crustaceans of the suborder Natantia, many species of which are edible, having a compressed or elongated body with a well-developed abdomen, long legs and antennae, and a long spinelike projection of the carapace.虾：一种小型的，通常为游行亚目中的海生十足甲壳纲动物其中许多种类可食，具有侧扁或伸长的身体，腹部发育较好，腿和触角长，背甲上有长如脊刺的突起〔tergite〕A sclerite forming one of the constituents of a tergum.背甲：组成动物背甲几部分之一的一种硬壳 |
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