单词 | air sac |
释义 | air sac 1. a sac containing air. 2. alveolus (def. 2). 3. any of certain cavities in a bird's body connected with the lungs. 4. a saclike dilation of the wall of a trachea in many insects. [1820-30] |
随便看 |
英语词典包含168451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。