oxyvaseline

例句：

1. 1.The patient was given an oxygen mask during the operation.
   在手术期间，患者被给予氧气面罩。
2. 2. The firefighters used oxygen masks to protect themselves from the smoke.
   消防员们使用氧气面罩保护自己免受烟雾的侵害。
3. 3. The doctor advised the patient to wear an oxygen mask while he was in the operating room.
   医生建议病人在手术室里戴上氧气面罩。