middle antrum

例句：

1. 1. The doctor performeda surgery on my middle ear to removethe infection.
   医生为我做了一次手术，清除了中耳的感染。
2. 2. During the operation, the surgeon had to make a smallincision in the middle ear toaccess the affected area.
   在手术过程中，外科医生不得不在中耳做一个小切口，以便进入受影响的区域。
3. 3. After the procedure, the patient was advised to avoid loudnoises and not to touch the middleear for several days to prevent infection.
   手术后，患者被建议避免大声噪音，并且在几天内不要触摸中耳，以防止感染。