paranasal sinus

例句：

1. 1. The paranasal sinus is an important part of the respiratory system.
   鼻旁窦是呼吸系统的重要组成部分。
2. 2.The patient had a paranasal sinus infection that required antibiotic treatment.
   患者患有鼻旁窦感染，需要抗生素治疗。
3. 3. The doctor performed a paranasal sinus surgery to relieve the patient's symptoms.
   医生进行了鼻旁窦手术，以缓解患者的病情。