痘疮

例句：

1. 1.The acne on his face is getting worse.
   他脸上的痘痘越来越严重了。
2. 2. She applied some ointment to the blister on her foot.
   她给脚上的水泡涂了一些药膏。
3. 3. He had a pimple on his forehead that he wanted to pop.
   他额头上有个痘痘，他想把它挤破。