absence of middle ear

例句：

1. 1. The patient's hearing was significantly reduced due to the absence of middle ear fluid.
   由于中耳液的缺失，患者的听力显著降低。
2. 2.The doctor performed a thorough examination to determine the cause of the patient's absence of middle ear fluid.
   医生进行了彻底的检查，以确定患者中耳液缺失的原因。
3. 3. Due to the absence of middle ear fluid, the patient required immediate surgery to repair the damaged eardrum.
   由于中耳液缺失，患者需要立即进行手术来修复受损的鼓膜。