blood blister

例句：

1. 1. He had a blood blister on his hand from the hot sun.
   他手上有一个血泡，是太阳晒的。
2. 2.The doctor advised him to keep the wound clean and avoid touching it with dirty hands.
   医生建议他保持伤口清洁，不要用手碰脏了。
3. 3. After the surgery, he was in a lot of pain and had several blood blisters on his legs.
   手术后，他非常疼痛，腿上有很多血泡。