A randomized controlled study of levofloxacin and cefaclor in the treatment of lower respiratory tract infections of patients with chronic obstructive pulmonary diseases是什麼意思_A randomized controlled study of levofloxacin and cefaclor in the treatment of lower respiratory tract infections of patients with chronic obstructive pulmonary diseases在線翻譯_英語_讀音_用法_例句