Forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1) were measured at baseline and 3-year follow-up using standard spirometry.是什么意思_Forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1) were measured at baseline and 3-year follow-up using standard spirometry.在線翻譯_英語_讀音_用法_例句