| 词汇 | air sac |
| 释义 | air sac noun [ C ] biology, anatomy specialized uk/ˈeə ˌsæk/ us/ˈer ˌsæk/ 气囊（鸟类体内从肺部延伸至骨骼以及其他身体部分的气囊，用于呼吸） a space filled with air that continues from a bird's lungs into one of its bones or another body area, used in breathing （昆虫的）气囊 a wide part like a bag in the tubes an insect uses for breathing 肺泡 an alveolus (= a very small air bag in the lungs) |
| 随便看 |
MX2U.com英汉词典共收录126179条英汉翻译词条，基本涵盖了全部常用英语词汇的翻译、用法及例句，是英语学习的有利工具。