- the specialized organs, collectively, concerned with external respiration: in humans and other mammals it includes the trachea, bronchi, bronchioles, lungs, and diaphragm
| 单词 | respiratory system |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 res′piratory sys′tem, [Anat.]
Collins Concise English Dictionary © HarperCollins Publishers:: respiratory system n
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