Illustration of respiratory system
 
 - 1 nostril
- 2 nose
- 3 nasal cavity
- 4 nasopharynx
- 5 oropharynx
- 6 larynx
- 7 trachea
- 8 bronchus
- 9 lung
| 单词 | respiratory system | 
| 释义 | respiratory systemnoun  : a system of organs functioning in respiration and in humans consisting especially of the nose, nasal passages, pharynx, larynx, trachea, bronchi, and lungs : respiratory tract   | 
| 随便看 | 
 | 
英语词典包含469781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。