Conclusion Smoking could injure ventilatory function, and initial manifestations are hypofunction mainly in small airway.

结论吸烟影响肺通气功能，早期主要表现为小气道功能减退。

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Conclusion Smoking could injure ventilatory function, and initial manifestations are hypofunction mainly in small airway.

结论吸烟影响肺通气功能，早期主要表现为小气道功能减退。

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