一级烧伤

例句：

1. 1. He sustained a first-degree burn on his hand during the accident.
   他在事故中手部受到了一级烧伤。
2. 2. The patient was in a critical condition after the first-degree burn.
   烧伤后，病人的状况非常危急。
3. 3. The doctor advised him to take care of the first-degree burn and avoid further damage.
   医生建议他小心处理一级烧伤，避免进一步的损伤。