frontal veins

例句：

1. 1. The doctor examined the patient's forehead and found some veins that were swollen.
   医生检查了病人的前额，发现一些静脉有些肿胀。
2. 2. During surgery, the surgeon carefully dissected the frontal veins to avoid damaging them.
   在手术过程中，外科医生小心地解剖前额静脉以避免损伤它们。
3. 3.The patient was given medication to reduce swelling in the frontal veins.
   患者被给予药物以减少前额静脉的肿胀。