Upper respiratory tract
volume
British pronunciation/ˌʌpə ɹɪspˈɪɹətəɹˌɪ tɹˈakt/
American pronunciation/ˌʌpɚ ɹˈɛspɹətˌoːɹi tɹˈækt/

"upper respiratory tract"的定义和意义

Upper respiratory tract
01

the nose and throat and trachea

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