Sulcus palatinus major

例句：

1. 1. The patient hada major sulcus on theright side of his mouth.
   病人右嘴角有一个大的裂口。
2. 2. The dentist performed amaxillary sulcus surgery torepair the damaged tooth.
   牙医进行了一次下颌裂手术来修复受损的牙齿。
3. 3.The child's mouth was severely injuredduring the accident and required a majorsulcus repair.
   孩子在事故中严重受伤，需要进行一次大腭裂修复。