| 单词 | protoavis |
| 释义 | protoavis (once / 2954828 pages) n WORD FAMILY protoavis n most primitive avian type known; extinct bird of the Triassic having bird-like jaw and hollow limbs and breastbone with dinosaur-like tail and hind limbs Hyper bird warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings |
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英语词典包含147318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。