branchial sinus

例句：

1. 1.The branchial sinus is a small opening in the roof of the mouth where food and water are taken in.
   鳃裂是口腔顶部的一个小型开口，用于吸入食物和水分。
2. 2. The doctor removed the branchial sinus to relieve his pain.
   医生移除了鳃裂以缓解他的疼痛。
3. 3. The patient was given medication to open up the branchial sinus.
   患者被给予药物以打开鳃裂。