sulcus for lesser petrosal nerve

例句：

1. 1. The surgeon made a small sulcus in the skin to remove the tumor.
   外科医生在皮肤上做了一个小凹槽来切除肿瘤。
2. 2.The carpenter carved a sulcus into the wood for a shelf.
   木匠在木头上雕刻了一个凹槽作为书架。
3. 3.The scientist measured the size of the sulcus and recorded the data.
   科学家测量了凹槽的大小并记录了数据。