| 单词 | gill book |
| 释义 | gill bookgill bookthe respiratory organs of aquatic ARACHNIDS such as the king crab (Limulus). Such organisms possess numerous leaves (hence ‘book’) through which blood circulates and over which oxygenated water is circulated. |
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。