Cancer of the nasal passages affects the paranasal sinuses (the small cavities in the bone surrounding the nose) and the breathing passages in the nose.
鼻癌影响鼻旁窦（鼻旁骨质内的小腔腺）和鼻内的呼吸通道。
Confounding factors are contamination of inhaled air with ambient no and contamination of exhaled air with no that has been produced in the paranasal sinuses and the nose.
混杂因素是吸入的空气污染与环境NO和呼出的空气污染与NO已生产的鼻窦和鼻子。
Confounding factors are contamination of inhaled air with ambient no and contamination of exhaled air with no that has been produced in the paranasal sinuses and the nose.
混杂因素是吸入的空气污染与环境NO和呼出的空气污染与NO已生产的鼻窦和鼻子。
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