1. The oropharyngeal region is located at the back of the mouth and includes the soft palate, tonsils, and base of the tongue.

口咽部位于口腔的后部，包括软腭、扁桃体和舌根。

2. A common symptom of oropharyngeal cancer is difficulty swallowing.

口咽癌的常见症状是吞咽困难。